LASSEMHVOLCAN«C

!B8& UNITED STATES Historic Events DEPARTMENT OF THE Lassen INTERIOR OPENING Harold L. Ickes, Secretary AND CLOSING Volcanic 1820 Arguello exploring party first to record DATES DEPEND

and name Lassen Peak (St. Joseph's UPON NATIONAL PARK Mountain). 19 40 WEATHER CALIFORNIA CONDITIONS

1850-51 Last lava flow from Cinder Cone. LASSEN PEAK, WITH LAKE HELEN NATIONAL PARK SERVICE IN FOREGROUND Arno B. Cammerer, Director

C OJ^TEU^TS 1864 Helen Brodt, first white woman to climb Lassen Peak, made ascent with Major Reading. Lake Helen named for Eruption of Lassen Peak her. 1 in 1915 Cover ASSEN VOLCANIC NA­ GEOLOGIC HISTORY TIONAL PARK, in northeast­ The Cascade Range, which is vol­ Geologic History .... 3 ern California, was created by canic in origin, is not ancient, measured 1906 May 6. Lassen Peak and Cinder Cone L Lassen Peak and Vicinity . 3 act of Congress approved August 9, in geologic time. Its beginning dates National Monuments established. 1916, to preserve Lassen Peak and the back to the Pliocene period, about a Chaos Crags and Chaos area containing spectacular volcanic ex­ million years before the great ice age Jumbles 6 hibits which surrounds it. This impres­ or glacial epoch. The present range sive peak, from which the park derives rests upon a great platform of lava Ancestral Mount Tehama . 6 1914 May 30. First known eruption of Las­ sen Peak since coming of white man. its name, stands near the southern end flows, which issued from many vents Cinder Cone Area ... 7 of the Cascade Mountains and is the and fissures. These lavas accumulated, only recently active volcano in the flow upon flow, to depths of several View from Lassen Peak . . 8 United States proper. Its last eruptions, thousand feet over wide areas in Wash­ 1915 May 19 and 22. Major eruptions of occurring between 1914 and 1921, ington, Oregon, southern Idaho, and Wildlife 8 Lassen Peak devastated large forest aroused popular and scientific interest northern California. Later this platform area. Fishing 10 in the area. was bent, or arched, slightly upward Camping 10 Lassen Peak was named for Peter along the line of the Cascades. No more widespread floods of lava came Educational Activities ... 10 Lassen, an early pioneer in northern 1916 Lassen Volcanic National Park created California. He was born near Copen­ forth, but numerous localized eruptions by act of Congress. Administration 11 hagen, Denmark, in 1800, and came produced the magnificent series of peaks which are now snowcapped and How to Reach .the Park . . 11 to the United States when he was thirty. After he became acquainted with for which the Cascades are famous. LASSEN PEAK AND VICINITY. — The Accommodations in the Park 13 1921 Lassen Peak ceased to erupt and sub­ northern California, he piloted emi­ western part of the park includes a What to Do and See ... 15 sided into a state of quiescence. grants from Humboldt, Nev., into the Sacramento Valley, using Lassen Peak 1 Abstracted from Gcoloxy of Lassen Volcanic Na­ as a landmark. tional Park, by Howcl Williams.

2 Lassen Volcanic Natiotial Par\ . California Lassen Volcanic National Par\ . California 3 profusion of volcanic peaks of the and slabs of rock accompanied by many "dome" type, of which Lassen Peak smaller fragments. These accumulated itself is the outstanding example. Others about the rising dome while the moun­ include White Mountain, Chaos Crags, tain was still growing and formed Eagle Peak, and Bumpas Mountain, all great rock slides on its slopes, much closely related in origin. as they appear today. This rock mantle (talus) in places reaches almost to the The great cone of Lassen Peak, ris­ summit and caps the bulging dome in ing 10,453 feet above sea level, on the the form of a cone. north slope of an ancestral mountain, is almost completely wrapped in a Compared with the slow upbuilding smooth-sloping mantle of rock frag­ of the more common type of volcano, ments, broken from its own cliffs. Las­ the rate of growth of an upswelling sen differs from the "strato-volcanoes," dome is phenomenally rapid, as wit­ the most common type, which are built nessed by the history of Santa Maria, up of alternate beds of lava and frag- in Guatemala, and Mont Pelee, in the mental material, sloping away steeply Island of Martinique. By comparison from a central crater. The mountain with the growth of these two domes it has been estimated that the steep as it stands today has passed through Lind photo cone of Lassen Peak may have been two stages of growth. The earlier Las­ ISLAND LAKE AND BONTE PEAK sen was a broad, gently sloping vol­ thrust up in a comparatively short time. cano of the "shield" type, built of layer Most dome volcanoes have no crater in the mud and recently have been upon layer of lava. flows of mud which swept 20-ton at the top, but at Lassen Peak gases uncovered along the course of Lost boulders 5 to 6 miles into the valleys It rose by a succession of lava flows escaping from lavas deep below main­ Creek. of Hat Creek and Lost Creek. tain open conduits through the softer, to an elevation above 8,500 feet, with On May 30, 1914, a series of erup­ Three days later, on May 22, another central part of the cone. The violence a base 5 miles across from north to tions began which lasted until February and lesser mud flow moved down the of their discharge at times shoots forth south and 7 miles from east to west. 1921, the most recent volcanic activity same slope, and minor flows took place lava in dustlike form, producing the In the second stage the steep Lassen in United States proper. Unfortunately, on the north and west flanks of the so-called volcanic "ash" of the tuff beds cone was built on this broad, substantial during this period no scientific observer volcano. At the same time a terrific and "mud" flows. Such activity opens platform. This, the more conspicuous was present in the region to record and hot blast, heavily charged with dust and a funnel-shaped or cuplike crater at portion, represents a still rarer "dome" report the detailed account of events. rock fragments, was discharged down type of volcano, formed by stiff, viscous the top. Before the eruptions of 1914-21 Violent eruptions occurred in May the northeast flank of the peak. So lava which was pushed up through the the crater of Lassen Peak was an oval 1915, possibly set off by the melting of violent was this outburst that trees on vent, like thick paste squeezed from bowl approximately 1,000 feet across the exceptionally heavy snow which the slopes of Raker Peak, more than a tube. Piling up in and around the and 360 feet deep. had accumulated during the preceding 3 miles away, were felled uniformly in old crater, this stiff lava rose in a Following the rise of the Lassen winter. On May 19 the first glowing the direction of the on-rushing blast. bulging domelike form high above it. Dome, there was a long period of lava made its appearance, rising in the At the same time a vertical column of Movements due to the rise of lava quiescence. Nevertheless, prior to the new crater and spilling through the smoke and ash rose more than 5 miles into the upswelling mass, the pressure activity of 1914-21 one or more "mud" western notch in the crater rim in the above Lassen crater. of steam and gases imprisoned within flows had swept down the northeastern form of a tongue which reached down The energy of the volcano was large­ it, and the chill of the outer portions slope, probably within the past 500 the slope 1,000 feet. During the night ly spent by the end of the 1915 erup­ on exposure to the air caused a con­ years, as judged from the state of of May 19 the snow was melted on the tion. With only occasional outbursts of tinuous breaking away of huge blocks preservation of logs that were buried northeastern slope, causing destructive steam and ash, the activity subsided

4 Lassen Volcanic National Park\ . California Lassen Volcanic National Part\ . California 5 during the next 2 years. A series of from various parts of the stiffening violent explosions occurred in May and mass. Thus vast talus slopes were June 1917, again following the melting formed by the breaking and crumbling of considerable quantities of snow. The of the rising masses, and the domes activity of 1916 and 1917 produced little were thrust up through their own ac­ effect besides modifying the form of the cumulating debris. crater by opening new vents within it. The north dome had risen 1,800 feet Most of the crater is now filled by the above the surrounding country when rough, blocky lava which rose into it explosions at the base of the rising in May 1915; but at the northwest a mass blasted away the support from yawning chasm through the crater wall the north face and hurled vast quanti­ was opened by later explosive erup­ ties of broken and falling lava out tions. In view of the volcanic history upon the cinder-covered region below. of the region, renewed activity at Las­ This rock blast was shot forward with sen is not probable for many years, al­ such momentum that its front advanced though there is no reason to suppose 400 feet up the opposite slope of Table that the volcano is yet extinct. Mountain, 2 miles distant from the CHAOS CRAGS AND CHAOS JUMBLES.— craters at the north foot of the Crags, Chaos Crags and Chaos Jumbles pre­ and stopped there with an abrupt front. Holmes photo SOLFATARAS AND STEAM VENTS IN BUMPAS HELL sent the most spectacular scene of tur­ An area 2/4 square miles in extent was bulent disorder to be found in the thickly covered by angular rock mingled entire region. with finer, sandlike material. Manzan- a jagged rim. Brokeoff Mountain, with tent of the gases. They decompose the Early violent eruptions formed sev­ ita Lake was formed where the Jumbles an elevation of 9,232 feet, is the larg­ lavas with which they come in contact eral cinder cones at the north base of obstruct Manzanita Creek. The neigh­ est remnant of this old rim. Other and change them into soft olive green, Lassen Peak. A portion of one of these boring Reflection Lake is but the larg­ remnants are Mount Diller, Black yellow, or red earthy material, or into cones, with its crater 600 feet in diam­ est of many pools that occupy depres­ Butte, and Pilot Pinnacle. a white claylike substance. The vents eter and 60 feet deep, is still preserved sions in the Jumbles. The beginning of this ancient moun­ are characterized by escaping vapors against the south flank of the Crags, ANCESTRAL MOUNT TEHAMA.—Three tain dates back a million and a half (mostly steam), thermal springs, and and the disorganized remains of at miles southwest of Lassen Peak once years to the late Pliocene epoch. Be­ churning mud pots of various colors. least two others are recognizable. The stood a great mountain known as fore the ice age its great eruptions had Their activity is most striking in the pushing up of the viscous lava doubt­ Tehama with a base more than 12 miles ceased and the broad basin of the early or late hours of the day, when the less followed soon afterward forming in diameter and rising approximately caldera was formed. Numerous steam colder air rapidly condenses the steam two domes, each about a mile in diam­ 4,000 feet above the steaming vents and hot gas vents (fumaroles) and into visible cloudlike masses. eter, the older south dome partially en­ and boiling springs of Sulphur Works. hot springs in the old caldera, includ­ THE CINDER CONE AREA.—One of the circling the later and higher north This mountain was built by a long ing Sulphur Works, Bumpas Hell, and most beautiful and unusual features of dome. Unable to flow for more than a succession of quiet lava flows, produc­ Steamboat Springs, show that the lava the park is Cinder Cone, 10 miles east- short distance, this stiff lava piled up ing a sloping cone of the "shield" type, beneath the surface has not yet entirely northeast from Lassen Peak, with its about the vents. Great strains were set similar to the volcanoes of the Ha­ cooled. Farther east, similar types of rugged and fantastic lava beds and its up in the solidifying mass by the up­ waiian Islands. After this activity activity may be seen at Devils Kitchen multicolored explosion products. The ward surge of the lava into the swell­ ceased, the crater and the upper parts and Boiling Springs Lake. These almost total absence of vegetation in­ ing dome and probably by frequent of the volcano were destroyed, thus fumaroles are of the type known as tensifies the appearance that the erup­ violent explosions of steam and gases forming a great bowl, or caldera, with solfataras, because of the sulphur con­ tion occurred not long ago. Actually

6 Lassen Volcanic National Par\ . California Lassen Volcanic National Par\ . California 7 its last lava flow is not much older than west and southwest the Sacramento the recent activity of Lassen itself, dat­ Valley spreads, like a great map, from ing back only to the winter of 1850-51. the base of Shasta to where it merges The beginning of its history was con­ into the great Central Valley of Cali­ siderably earlier, although it is entirely fornia, a sweep of fully 200 miles; post-glacial and hence very recent in the to the north Mount Shasta looms in geologic sense. splendid majesty, and far beyond the After most of the present cone had peaks of southern Oregon link Lassen been piled up by explosive cinder erup­ Volcanic with its sister park at Crater tions, lava flowed out from its base; Lake; to the eastward the Susan River then followed a second series of cinder drainage guides the eye to Honey Lake eruptions and also a second series of Valley and the distant mountains of lava flows. The last of the second series Nevada; to the south the view is over was erupted in 1851, when flaring the High Sierra, across the broad ex­ lights, which persisted for many nights, panse of forested mountain region in were observed from various distant the Feather River country, until the pic­ points. Later examination has shown ture dissolves in the purple mysteries that this activity produced the promi­ which veil the distances. nent black lava stream which emerged In the foreground the splendid moun­ from the southern base of the cone, tains viewed from the lower elevations curved to the south, then east and now seem pigmies. At the base of northeast, and flowed into Butte Lake. Lassen to the north the Chaos Crags An earlier flow of this late series sepa­ and to the east White Mountain stand rates Butte and Snag Lakes. out in bold relief. Curving from the All eruptions from the crater of Cin­ southerly base, the serrated edges of the der Cone have been of the cinder- ancient crater rim, with Lake Helen, producing explosive type. The lava a gemlike setting in its crescent, include flows, on the other hand, have pushed six peaks which attain a height of over their way through the loose cinders at 9,000 feet above sea level. or near the base of the cone. WILDLIFE Some lava flows can be dated with a Lassen Volcanic National Park, like fair degree of accuracy by estimating all the other national parks, is an abso­ the age of trees that are growing upon lute game sanctuary. Before active ad­ them. The flow which now separates ministration of the park began, hunting Butte and Snag Lakes and which pre­ in certain sections was carried on ex­ ceded that of 1851 is thought to be cessively, and consequently wild game about 200 years old. was seldom seen in any quantity. Un­ VIEW FROM LASSEN PEAK der the protection afforded during the A most inspiring view may be ob­ past few years, the park has apparently tained from the summit of Lassen succeeded in establishing itself as a Peak. For a radius of 150 miles the sanctuary for wild animals, which are Barton photo magnificent panorama unfolds. To the now more numerous than before. Black- LASSEN HAS SOME OF THE FINEST SKI SLOPES IN THE WORLD

8 Lassen Volcanic National Par/{ . California Lassen Volcanic National Part\ . California 9 tail and mule deer may be seen in most Calif. It is in the Boiling Springs Lake- any section of the park, and a variety Devils Kitchen district. of smaller animals affords much pleas­ BUTTE LAKE CAMPGROUND is located ure to visitors. Occasionally a black in the northeastern part of the park. bear appears. This beautiful area is at the site of FISHING the 1850-51 lava flows that issued from A regular program of fish stocking the south base of Cinder Cone. To in the many lakes and streams of Las­ get to Butte Lake by automobile, take sen Volcanic National Park has made the Forest Service road which turns this park one of the finest fishing areas east from California Highway No. 89, in the State. The most numerous about 1 mile north of the village of Old species is the rainbow trout. Brown Station. Most of this road is in poor trout, Loch Leven, and eastern brook condition. are also found in abundance. The SULPHUR WORKS CAMPCROUND is waters are very cold, and the clean, near the southwest entrance to the park. sandy bottoms of the lakes and plenti­ There are few conveniences for camp­ ful food supply make the trout very ers as this is a new and relatively un­ fine eating. developed campground. The limit for a day's catch is 10 Kings Creek Campground, on the pounds and 1 fish, with a maximum of Lassen Peak Highway, is at a high 10 fish, except in Manzanita and Re­ elevation. This delightful area is open MANZANITA LAKE LODGE flection Lakes, where the limit is 5 only about 6 weeks during the sum­ pounds and 1 fish or 5 fish. A State mer. of the eruptions of Lassen Peak. Geo­ on the Red Bluff-Susanville Highway angling license is required. Where not logical, botanical, zoological, and his­ No. 36. Address communications for inconsistent with special park regula­ SUMMIT LAKE CAMPGROUND, also on torical exhibits also are found here. An the superintendent to Mineral, Calif. tions, the fishing laws of the State of the Lassen Peak Highway, is nearest attendant is on duty to provide general Mail for campers and for the park California apply and are enforced. the central portion of the park. Fa­ information for visitors. utility operator should be addressed to cilities are well developed. This is the NATURALIST ACTIVITIES originate at Manzanita Lake, Calif. CAMPING best location for those who wish to Manzanita Lake. Hikes and caravans HOW TO REACH THE PARK Lassen Volcanic National Park is hike to the wilderness and lake areas. start from the museum parking area, BY AUTOMOBILE. — Main approach primarily a campers' park. Excellent Fine swimming. camping spots have been located in and nightly lectures are given at the roads to the park are in excellent con­ MANZANITA LAKE CAMPGROUND, sit­ accessible areas. Manzanita Lake Campground camp- dition. From Redding on U. S. High­ uated near the northwest entrance to fire circle. Occasionally programs are way 99, take State Highway 44 to JUNIPER LAKE CAMPGROUND, in the the park, has the best developed con­ presented at other campgrounds. the Manzanita Lake Entrance. State southeastern part of the park, is ap­ veniences and is located near a store. ADMINISTRATION Highway 89 from Shasta City is a proached via Chester, Calif., over an The park is administered by the popular route from the north. U. S. unimproved dirt road. The camp­ EDUCATIONAL ACTIVITIES United States Department of Interior, Highway 299, connecting Alturas and ground is on the east side of Juniper LOOMIS MEMORIAL MUSEUM was through the National Park Service, with Redding, intersects State Highway 89 Lake, the largest lake in the park. given to the park by Mr. and Mrs. Superintendent John C. Preston in im­ about 38 miles north of Manzanita WARNER VALLEY CAMPGROUND in the B. F. Loomis. The building, located mediate charge. The superintendent's Lake. south central part of the park can be at Manzanita Lake, houses an excellent office is located at administrative head­ From Red Bluff, Chester, Westwood, reached over a fair road from Chester, series of photographs giving the story quarters one-half mile west of Mineral, and Susanville approach is over State

10 Lassen Volcanic National Par\ . California Lassen Volcanic National Par\ . California 11 Highway 38 to the Mineral Entrance, ment contract. The post office address thence to Manzanita Lake over the is Manzanita Lake, Calif. Lassen Peak Highway. COTTAGE ACCOMMODATIONS.—Modern Roads into Warner Valley and to cottages with hotel and housekeeping Juniper Lake branch off from State arrangements. Rates from $1.50 and Highway 36 at Chester. These roads $2.25 up.

are in poor condition. DINING ROOM AND FOUNTAIN.—Meals BY RAIL.—Nearest railroad connec­ served at rates from 25 cents to $1.25. tions to the park are at Red Bluff and A la carte and fountain service avail­ Redding on the Southern Pacific line able. _ _ and at Keddie on the Western Pacific GIFT SHOP.—In the lobby of Man­ H line. z zanita Lake Lodge. Indian crafts of 3 BY BUS.—The Mount Lassen Transit > local and southwest tribes; wooden, Q Co. makes daily connections with z metal, and leather gifts and souvenirs. < Southern Pacific trains at Red Bluff. M GENERAL STORE.—Groceries, fresh a The bus of the Lassen National Park < meats, fresh vegetables, drugs, and fish­ Co. makes connections with the same Transit Co. The Burlington Transpor­ z tation Co. provides bus service to Reno, Manzanita Lake furnishes gasoline, oil, < Nev., and the Pacific Greyhound Lines minor accessories, and tire service. J to Reno and Red Bluff. Bus service SADDLE AND PACK HORSES.—Available o 14 is also available to Redding. at Summit Lake, 12 miles from Man­ < zanita Lake Lodge. From Summit From Mineral, the Lassen National Lake one can ride into the wilderness i Park Co., with headquarters at Man­ area of the park, with its many lakes zanita Lake, will furnish "on call" transportation over the Lassen Peak and snow-fed streams, over trails seldom Highway and to various points along used by hikers. the way. For complete details write COMMUNICATION SERVICE. — Tele­ to the Lassen National Park Co., phone and telegraph services are avail­ Manzanita Lake, Calif. able at Manzanita Lake Lodge. OTHER CAMPS, LODGES, AND RESORTS.— ACCOMMODATIONS IN THE At Mineral Lodge, Drakesbad, Lee's PARK Camp, Kelly's Camp, Juniper Lake, MANZANITA LAKE LODGE.—Located and other points in and near the park. one-half mile from the Manzanita Lake Accommodations range from campsites Entrance, is operated by the Lassen Na­ to cabin and hotel rooms. tional Park Co. It is the only service This booklet is issued once a year. operating in the park under Govern­ The rates mentioned herein may have

12 Lassen Volcanic National Parkf . California Lassen Volcanic National Par\ . California 13 changed slightly since issuance, but the campground, equipped with tables and latest rates approved by the Secretary fireplaces, running water, and modern of the Interior for the Government- sanitary comfort stations, is recom­ controlled accommodations are on file mended. Fishing is good in Manzanita with the superintendent and park Lake; groceries and supplies are avail­ operator. able at this point; and all daily con­ Information concerning all services ducted trips and hikes by ranger nat­ and accommodations provided by the uralists originate here. Lassen National Park Co. may be ob­ Nightly campfire programs, consist­ tained by writing the company at Man- ing of informal talks, music, stories, zanita Lake, Calif. Advance reserva­ and stunts by campers and rangers, are tions should be made during the main held at Manzanita Lake, and occa­ travel season, June 20 to September 10. sionally in the other campgrounds.

WHAT TO DO AND SEE OTHER SECTIONS OF PARK ONE-DAY TRIP.—Only a small portion WARNER VALLEY.—Famous Boiling of Lassen Park can be seen in 1 day, Lake and Devils Kitchen. Several but those who cannot stay longer will private resorts in this section offer com­ find the following suggestions helpful: fortable accommodations and feature Obtain the schedule of conducted guided horseback trips to various points trips and hikes from the ranger at the of interest in the park. A fair dirt road checking station. leads in from Chester. Campgrounds Drive over the entire Lassen Peak are located beyond the ranger station. Highway (30 miles) from one check­ JUNIPER LAKE.—In the neighborhood ing station to the other, stopping en of splendid fishing. A private resort route at: on Juniper Lake offers tent and cabin The Sulphur Works. accommodations, with a grocery store, The Soda Spring. post office, and boats for rent. There Lake Emerald. is a free public campground at the south The Devastated Area. end of the lake, the largest body of Chaos Jumbles and Dwarf Forest. water in the park; 12 miles from Ches­ The Mae Loomis Memorial Museum. ter; low-grade dirt road. If time permits, climb Lassen Peak BUTTE LAKE.—Perhaps the most un­ (allow at least 3 hours for the round usual section of the park. The remark­ trip) or hike into Bumpas Hell (2 able Cinder Cone is only a short hike hours is the average time required). from the lake. Excellent campgrounds, Lunches, cottages, meals, and sup­ but no accommodations or supplies are plies are available at Manzanita Lake. available. Accessible from the east by Two DAYS AND LONGER.—Stay at Man­ the Westwood-Pittville Road; from the zanita Lake Lodge (see accommoda­ south and west by the Lassen Peak tions), or at private resorts in or near Highway and Hat Creek Road. About Potts photo the park. 15 miles of poor road from either MANY OF THE MOST INTERESTING FEATURES OF THE PARK ARE ACCESSIBLE direction. ONLY TO HIKERS OR HORSEBACK PARTIES If camping, the Manzanita Lake 14 Lassen Volcanic National Par\ . California Lassen Volcanic National Part\ . California 15 RULES AND REGULATIONS carrying trash with you until it can be [Briefed] burned, buried, or placed in receptacles. THE PARK REGULATIONS are designed CAMPING.—Camp only in designated for the protection of the natural beau­ areas. Keep your camp clean. As far ties as well as for the comfort and as possible burn garbage in campfire, convenience of visitors. The complete and empty cans and residue into gar­ regulations may be seen at the office bage cans provided for that purpose. of the superintendent of the park and Keeping dogs or cats in camp overnight at all ranger stations. The following is prohibited. A 30-day camping limit synopsis is for the general guidance of in any one campground in the park is visitors, who are requested to assist enforced. in the administration of the park by ob­ TRAILS.—Cutting corners and taking serving the rules. short cuts on trails is a dangerous prac­ AUTOMOBILES.—Many sharp unex­ tice and causes considerable damage to pected curves exist on the Lassen Peak the trails. This practice is prohibited Highway, and fast driving is danger­ and the regulation strictly enforced. ous. Park speed limit is 35 miles per FISHING. — State license required. hour. At the Manzanita Lake area, a Limit: 10 pounds and 1 fish or 10 fish, 20-mile zone has been established and except in Manzanita and Reflection is patrolled. Drive slowly keeping al­ Lakes, where the limit is 5 pounds and ways well to the right, and enjoy the 1 fish or 5 fish. scenery. Fee for automobile permit is FIRES.—Light carefully and in des­ $1. ignated places. Extinguish completely SPECIMENS AND SOUVENIRS.—In order before leaving camp, even for tempo­ that future visitors may enjoy the park rary absence. A written fire permit unimpaired and unmolested, it is strict­ must be obtained from a park ranger ly prohibited to break any formation; before building fires outside established to take any minerals, lava, pumice, sul­ campgrounds. phur, or other rock specimens; to in­ HOT SPRING AREAS.—Dangerous. Do jure, molest, or disturb any animal, not take chances. Keep on trails or bird, tree, flower, or shrub in the park. step where others have stepped before. Driving nails in trees or cutting the Injuries have resulted from carelessness bark of trees in campgrounds is like­ in these areas. wise prohibited. Dead wood may be PARK RANGERS.—The rangers are on gathered for campfires. duty to help and advise you as well TRASH.—Scraps of paper, lunch re­ as enforce the regulations. When in fuse, film cartons, and similar trash doubt, ask a ranger. scattered along the roads and trails and HOURS.—The two checking stations in campgrounds and parking areas are are open between 6 a. m. and 10 p. m. unsightly. Consider the park as yours. No vehicle may enter or leave the park Help us keep it clean and attractive by outside of these hours.

W. H. Kistler Stationery Co., Denver, Colorado. 2-20-40—50M.