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| geoglyphs | |
|---|---|
| Name | Geoglyphs |
| Caption | Nazca hummingbird geoglyph, Nazca Lines |
| Location | Worldwide |
| Built | Prehistoric to modern |
| Epoch | Neolithic to Contemporary |
| Cultures | Nazca culture, Paracas culture, Ancestral Puebloans, Tiwanaku, Mojave, Uros people |
geoglyphs Geoglyphs are large-scale ground markings created by arranging, removing, or manipulating surface materials to form shapes visible from distance or altitude. These features occur globally across landscapes associated with Nazca Lines, Blythe Intaglios, Atacama Desert, Amazon Rainforest, and Great Salt Lake, and they intersect archaeology, Aerial archaeology, Remote sensing, and Heritage conservation practices. Research into geoglyphs involves specialists from Archaeology, Anthropology, Geology, Paleoecology, and institutions such as the Smithsonian Institution, British Museum, and National Geographic Society.
Geoglyphs are defined as large-scale designs produced on the ground by positive construction (piling stones) or negative removal (clearing surface layers) and are characterized by size, visibility from elevation, and often schematic or figurative motifs. Examples exhibit planned layouts, orientation, and material contrasts found at sites like Nazca Lines, Paracas, Palpa Province, Rio Grande de Nazca Basin, Blythe Intaglios, Coso Range, and Uffington White Horse landscapes. Typical features studied by teams from University of Oxford, Harvard University, University of Cambridge, University of Chicago, and University of California, Berkeley include line curvature, geospatial alignment, and relation to watercourses such as Amazon River, Rio Grande, or Lake Titicaca.
Types include figurative animal or human effigies (anthropomorphic and zoomorphic), geometric motifs, spiral forms, and large symbols made by stone alignments, trenching, or scraping. Distribution is global: concentrations in the Nazca Desert, Atacama Desert, Peruvian Andes, Bolivia, Chaco Canyon, Colorado Plateau, Mojave Desert, California Desert, United Kingdom, Sahara Desert, Central Asia, Easter Island, and parts of Australia. Regional traditions link to cultural centers such as Tiwanaku, Wari, Moche, Ancestral Puebloans, Mississippian culture, and Indus Valley neighbors, with modern instances near Los Angeles, Las Vegas, and Beijing.
Scholars trace geoglyph creation to the Neolithic and Bronze Age in some regions and to late Preclassic and Classic periods in other zones. Research connects makers to societies including the Nazca culture, Paracas culture, Moche culture, Tiwanaku, Inca Empire, Chavín culture, and southwestern Ancestral Puebloans. Historical study draws on records by explorers like Ernst Heinrich Haeckel in aerial surveys, 20th-century documentation by Paul Kosok, analysis by Maria Reiche, and modern remote work by teams from NASA, European Space Agency, Max Planck Society, and Ludwig Boltzmann Institute.
Construction methods vary: scraping dark desert varnish to expose lighter subsoil, arranging boulders or cairns, earthworks of compacted soil, and planting vegetation contrasts. Materials include aeolian gravels, lithic pavement, organic turf, and calcrete layers found at Nazca, Palpa, Coso Range, Blythe Intaglios, Uffington White Horse, and Long Man of Wilmington. Engineers and experimental archaeologists from Massachusetts Institute of Technology, Imperial College London, and California Institute of Technology have reconstructed techniques using simple surveying tools, ropes, stakes, and sighting posts comparable to devices documented in ancient Egypt and Maya civilization contexts.
Dating employs radiocarbon analysis of associated organic remains, optically stimulated luminescence (OSL) of sediments, stratigraphic relationships, and stylistic seriation relative to ceramic chronologies from sites such as Nazca, Paracas, Tiwanaku, and Wari. Chronologies range from late Holocene contexts ~3000 BP for Andean lines to historic-era creations and modern hoaxes near Los Angeles and Blythe. Agencies like USGS, INRENA, and university labs in Peru, Bolivia, Chile, United Kingdom, and United States contribute datasets that refine temporal models.
Interpretations include ritual pathways, astronomical calendars, pilgrimage routes, territorial markers, water-related iconography, and social signaling. Proposals invoke alignments to celestial events studied using archaeoastronomical methods similar to investigations at Stonehenge and Nabta Playa. Ethnographic analogies reference practices among Aymara, Quechua, Uros people, Tlingit, and other indigenous groups, while some scholars suggest mnemonic or performative landscape use tied to rites documented in chronicles of the Inca Empire and colonial observers.
Geoglyph preservation faces threats from urban expansion, mining, agricultural plowing, vehicle traffic, looting, and climate-driven erosion. Notable impacts include damage from road construction near Nazca Lines, off-road vehicles in Atacama Desert, renewable energy projects around Great Salt Lake, and vandalism recorded near Blythe Intaglios. Conservation efforts involve UNESCO World Heritage Site management plans, national agencies like Peruvian Ministry of Culture, collaborations with ICOMOS, and community stewardship programs with indigenous organizations and NGOs.
Notable instances include the Nazca Lines (hummingbird, condor, spider), Blythe Intaglios (human figures), Cerne Abbas Giant, Uffington White Horse, Long Man of Wilmington, Paracas geoglyphs, Atacama Desert geoglyphs, Coso petroglyphs, Atacama Giant, Palpa Lines, Pampa de Jumana, Chaco Canyon roads and alignments, Amazonian geometric earthworks, and modern works such as Nazca modern replicas and large-scale art projects near Los Angeles and Las Vegas.
Category:Archaeological sites