An atlas of Earth’s mysterious places — megaliths, pyramids, lost and sunken cities — with the evidence shown plainly: what is verified, what is contested, and what is still unknown.

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Earthworks tagged “alto”

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🇨🇱 Chile · Geoglyph

Azapa Alto de Azapa Geoglyphs (Upper Azapa Precordillera)

Early Formative Alto Ramírez I–II · Alto Ramírez upper-valley

Upper Azapa precordillera: 18 steep-slope figures at 980 m marking valley bottleneck to highlands.