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🇧🇷 Brazil · Geoglyph
Late Intermediate to Late Horizon (Xingu polyglot / Kayabi) · Upper Xingu archaeological tradition / Kayabi
Southern Amazon forest geoglyph province distinct from Acre-Urubamba: 14 circular and rectangular enclosures (120-320 m) on Xingu headwater interfluvia (260 m, 9°45′S 52°21′W), documented by Mendeley…
🇪🇨 Ecuador · Geoglyph
Formative (Early Formative to Upano contemporary) · Cóndor cloud-forest formative (pre-Mayo-Chinchipe)
Tepui-top forest geoglyphs on the Cordillera del Cóndor divide (1,250 m, 3°23′34″S 78°06′49″W per Ichigkat Muja National Park centre), bridging Ecuador and Peru Amazon headwaters: Rio Cenepa (Peru)…
🇧🇷 Brazil · Geoglyph
Late Pre-Columbian (200 BCE – 900 CE) · Acre (Beni) geoglyph builders
Western Acre Capixaba 300 m circle ditch 3 m deep with embankment and 120 m square 2 m high under pasture — causeway 400 m links.
🇧🇷 Brazil · Geoglyph
Late Pre-Columbian (200 BCE – 900 CE) · Acre (Beni) geoglyph builders
Western Acre Capixaba 300 m circle ditch 3 m deep with embankment and 120 m square 2 m high under pasture — causeway 400 m links.
🇷🇺 Russia · Tumulus
Early Iron Age (Sauromatian to Early Sarmatian) · Sauromatian / Early Sarmatian (Prokhorovka)
40+ Sauromatian–Early Sarmatian kurgans (600–200 BCE) — 'Amazon' female warrior necropolis on Ilek River.
🇧🇴 Bolivia · Earthwork
Late Intermediate, Casarabe culture · Casarabe (Moxos) savanna farmers
1,000 km of causeways + 147 forest-island cities (500–1400 CE) in seasonally flooded Beni savanna.
🇪🇨 Ecuador · Ancient city
Formative to Regional Development (500 BCE–600 CE) · Kilamope (Upano) culture; Sangay phase Huapula
Lost Amazon cities (500 BCE–600 CE) under Upano forest—20 towns, 6,000 mounds and 25 km of roads revealed by 2024 LiDAR.
🇧🇷 Brazil · Earthwork
Marajoara Phase (Polychrome Tradition) · Marajoara (Arauan-derived Amazonian Polychrome)
Marajoara chiefdom mounds (800–1400 CE)—40-m tesos and funerary urn fields on Amazon's delta island.
🇧🇷 Brazil · Lost city
Late Pre-Columbian (c.700 – 1600 CE) · Xinguano tradition (Kuikuro ancestors)
Upper Xingu plaza town 8 km east of classic Kuhikugu — ring ditch, 700 m causeway and terra preta, 14 ha, 900–1350 CE.
🇰🇿 Kazakhstan · Tumulus
Early to Middle Sarmatian (Sauromatian–Early Sarmatian, 500–350 BCE) · Sauromatian–Early Sarmatian (Prokhorovka transitional)
40+ Sarmatian royal mounds (5th–4th c BCE) with 820-g gold torque and Amazon warrior — West Kazakh Ural steppe.
🇧🇷 Brazil · Ancient city
Xinguano 800–1600 CE · Xinguano / Arawak
Cluster of 20+ pre-Columbian settlements in Xingu with causeways 50 m wide, plazas, reservoirs, showing dense urbanism (population 50k) in Amazon before 1492, built 800–1400 CE, described by Michael…
🇧🇷 Brazil · Geoglyph
Pre-Columbian 1–1500 CE · Acre / Xinguano tradition
Hundreds of large ditched enclosures (squares, circles, U-shapes) revealed since 1977 by deforestation, built by pre-Columbian Amazonian cultures using forest clearance, dated 1–1500 CE, associated…
