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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Shell middens tagged “island”

1 place to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.

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🇺🇸 United States · Earthwork

Hontoon Island Mounds

St Johns I–II 1000 BCE–1500 CE · St Johns (Mayaou Timucua)

Shell-midden island famous for 6 m buried wooden owl totem (600 CE) and snail-shell ridges.