Hydraulic Chiefdoms in the Eastern Andean Highlands of Colombia
Total Page:16
File Type:pdf, Size:1020Kb
heritage Article Hydraulic Chiefdoms in the Eastern Andean Highlands of Colombia Michael P. Smyth The Foundation for Americas Research Inc., Winter Springs, FL 32719-5553, USA; [email protected] or [email protected] Received: 16 May 2018; Accepted: 9 July 2018; Published: 11 July 2018 Abstract: The natural and cultural heritage of the Valley of Leiva in the Eastern Colombian Andes is closely tied to the Colonial town of Villa de Leyva. The popular tourist destination with rapid economic development and agricultural expansion contrasts sharply with an environment of limited water resources and landscape erosion. The recent discovery of Prehispanic hydraulic systems underscore ancient responses to water shortages conditioned by climate change. In an environment where effective rainfall and erosion are problematic, irrigation was vital to human settlement in this semi-arid highland valley. A chiefly elite responded to unpredictable precipitation by engineering a hydraulic landscape sanctioned by religious cosmology and the monolithic observatory at El Infiernito, the Stonehenge of Colombia. Early Colonial water works, however, transformed Villa de Leyva into a wheat breadbasket, though climatic downturns and poor management strategies contributed to an early 17th century crash in wheat production. Today, housing construction, intensive agriculture, and environmental instability combine to recreate conditions for acute water shortages. The heritage of a relatively dry valley with a long history of hydraulic chiefdoms, of which modern planners seem unaware, raises concerns for conservation and vulnerability to climate extremes and the need for understanding the prehistoric context and the magnitude of water availability today. This paper examines human ecodynamic factors related to the legacy of Muisca chiefdoms in the Leiva Valley and relevant issues of heritage in an Andean region undergoing rapid socio-economic change. Keywords: archaeology; chiefdom ecodynamics; climate change 1. Introduction In the Valley of Leiva of the Eastern Andes of Colombia, natural and cultural heritage is integrally tied to the Colonial town of Villa de Leyva. A popular tourist destination and place where housing development is growing by leaps and bounds, the valley is also undergoing intensive agricultural expansion. These factors compound pressures on already limited water resources and serve to highlight recent research into the discovery of Prehispanic hydraulic systems; ancient responses to water shortages conditioned by rapid climate change. In an environment where effective rainfall is often insufficient or inconveniently timed for farming and alluvial landscapes subject to intense erosion caused by periodic drought and flooding, irrigation was and still is vital to human settlement in the semi-arid portions of this highland valley. Chiefly elites tried to mitigate the effects of limited water supplies by engineering a hydraulic landscape sanctioned by religious cosmology embodied in the central stone monuments of the monolithic observatory at El Infiernito, the Stonehenge of Colombia. Understanding the prehistoric context and magnitude of factors conditioning unpredictable water availability is vital to modern planners to achieve sustainable economic development under challenging environmental constraints. Heritage 2018, 1, 100–121; doi:10.3390/heritage1010008 www.mdpi.com/journal/heritage Heritage 2018, 1 101 Heritage 2018, 2, x FOR PEER REVIEW 2 of 26 In Early Colonial times, hydraulic systems transformed Villa de Leyva and its environs into a wheat breadbasketIn Early Colonial for the times, Viceroyalty hydraulic of Nueva systems Grenada, transformed while Villa traditional de Leyva maize and its production environs into remained a relativelywheat constant.breadbasket Climatic for the downturns Viceroyalty and of poor Nueva management Grenada, while strategies traditional such as maize over-farming production caused by reducingremained ancientrelatively systems constant. of landClimatic rotation downturns and introduction and poor management of European stra domesticatestegies such as contributed over- to afarming severe plague,caused leadingby reducing to an ancient ecological systems disaster of land culminating rotation inand a crashintroduction in wheat of productionEuropean by the earlydomesticates 17th century contributed [1]. Today, to a severe the construction plague, leading of luxuryto an ecological homes anddisaster hotels culminating with swimming in a crash pools combinedin wheat with production irrigation by the agriculture early 17th century and greenhouse [1]. Today, truckthe construction farms that of now luxury blanket homes theand valleyhotels are leadingwith toswimming acute water pools shortages, combined promotingwith irrigation social agriculture tensions and between greenhouse town truck and farms country that residents. now Theblanket complexities the valley of heritage are leading in ato relatively acute water dry shorta valleyges, with promoting a long social history tensions of hydraulic between chiefdoms town and and agriculturalcountry residents. intensification The complexities provide insight of heritage into how in moderna relatively development dry valley iswith increasing a long history vulnerability of hydraulic chiefdoms and agricultural intensification provide insight into how modern development to the environmental extremes. This paper examines human ecodynamic factors (socio-ecological is increasing vulnerability to the environmental extremes. This paper examines human ecodynamic dynamics of coupled human and natural systems) related to the legacy of Muisca chiefdoms in the factors (socio-ecological dynamics of coupled human and natural systems) related to the legacy of LeivaMuisca Valley. chiefdoms Issues of in heritage the Leiva are Valley. reviewed Issues with of he regardritage are to reviewed risk assessment with regard and to mitigation risk assessment of natural andand cultural mitigation resources of natural in an and Andean cultural highland resources region in an Andean undergoing highland profound region socio-economicundergoing profound change. socio-economic change. 2. Materials and Methods 2. Materials and Methods 2.1. A Hydraulic Landscape and Cosmology 2.1.Recent A Hydraulic climate Landscape change and and Cosmology human ecodynamic research in the Leiva Valley identified an engineeredRecent hydraulic climate landscapechange and consistinghuman ecodynamic of irrigation research canals, in the check Leiva dams, Valley drainage identified conduits, an as wellengineered as potential hydraulic raised-fields landscape (artificially consisting of elevated irrigation planting canals, surfaces)check dams, along drainage river conduits, alluviums as near the archaeologicalwell as potential siteraised-fields of El Infiernito (artificially (Figure elevated1; see planting below) surfaces) [ 2]. Prehispanic along river canals alluviums and raised-fieldsnear the in thearchaeological valley were site reported of El Infiernito to be still (Figure in use 1; see in below) the 16th [2]. century Prehispanic [3]. canals In Colonial and raised-fields times, canals in the were re-engineeredvalley were forreported processing to be wheatstill in grainuse in atthe strategic 16th century upland [3]. streamIn Colonial channels times, near canals Villa were de re- Leyva, someengineered originally for built processing by the Muisca,wheat grain where at strategic water-powered upland stream grist millschannels were near constructed Villa de Leyva, for producing some originally built by the Muisca, where water-powered grist mills were constructed for producing bread flour [1,4]. Over the years, levees have been constructed along the Rio Leyva to control flooding bread flour [1,4]. Over the years, levees have been constructed along the Rio Leyva to control flooding along with canals, channels, and reservoirs excavated throughout the valley for irrigation agriculture along with canals, channels, and reservoirs excavated throughout the valley for irrigation agriculture andand pump-based pump-based sprinkler sprinkler systems systems for for growing growing cash crops. Figure 1. Map of Colombia, South America, and the Department of Boyacá with an inset showing the Figure 1. Map of Colombia, South America, and the Department of Boyacá with an inset showing locations of Valley of Leiva, the site of El Infiernito, Villa de Leyva, as well as other towns/sites the locations of Valley of Leiva, the site of El Infiernito, Villa de Leyva, as well as other towns/sites throughout valley. throughout valley. Heritage 2018, 1 102 The mysterious monoliths of El Infiernito have been the subject of speculation and questionable Heritage 2018, 2, x FOR PEER REVIEW 3 of 26 interpretation for over four centuries (see below; Figure2a). Not until recently, however, has systematic archaeologicalThe investigation mysterious monoliths identified of El ElInfiernito Infiernito have asbeen an the astronomical-meteorological subject of speculation and questionable observatory of the ancientinterpretation Muisca culture for over [5]. four Modern centuries surveys (see belo havew; begunFigure to2a). reconstruct Not until recently, the settlement however, historyhas of the systematic archaeological investigation identified El Infiernito as an astronomical-meteorological Leiva Valley,observatory but little of isthe known ancient about Muisca the culture actual [5]. chiefdom Modern surveys community have (rankedbegun to kinshipreconstruct society) the for