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🇧🇷 Brazil · Ancient city
Claimed ancient (Fawcett 500 BCE Atlant. survivors) vs real Xinguano 800–1600 CE · Fawcett: imagined Atlantean/Cartaginian survivors; real: ancestral Kuikuro (Arawak) Xinguano polities
Fawcett's Atlantean Z near Xingu 1925 vanished – 30 km away Heckenberger found real 50-ha Kuhikugu road-plaza network.
🇧🇷 Brazil · Ancient city
Late Pre-Columbian (800–1600 CE) · Upper Xingu / ancestral Kuikuro Arawak
Eastern plaza K10 of Kuhikugu cluster on Seki East — 12 ha plaza with ditch and 1.2 km causeway.
🇧🇷 Brazil · Ancient village
Late Pre-Columbian (900–1600 CE) · Upper Xingu / ancestral Kuikuro Arawak
Central reservoir K12 of Kuhikugu at Seki isthmus — 80×60 m embanked reservoir and 900 m canal.
🇧🇷 Brazil · Ancient village
Late Pre-Columbian (900 – 1650 CE) · Xinguano Arawak / Kuhikugu
Western Kuhikugu plaza K9 250×150 m at Seki Lake west — causeway 500 m ×12 m and reservoir 100 m under gallery forest; Xinguano.
🇧🇷 Brazil · Ancient village
Late Pre-Columbian (900 – 1650 CE) · Xinguano Arawak / Kuhikugu
Western Kuhikugu plaza K9 250×150 m at Seki Lake west — causeway 500 m ×12 m and reservoir 100 m under gallery forest; Xinguano.
🇧🇷 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.
🇧🇷 Brazil · Hypothetical site
Cretaceous Cachimbo quartzite ridge geology + Munduruku rumor relay onto Fawcett notebook; Lost City Z proper is Kuhikugu 70 km SE (separate problem) · Natural quartzite ridge joints and tower karst misread as Z monumental walls (no culture) — real Z is Kuhikugu nearby
Fawcett Z second ridge phantom 8.5S 50.8W — quartzite joint walls 1.5 km and 8 m tower karst misread as Z citadel east of Cachimbo.
🇧🇷 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…
