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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Verified, partially excavated long barrows

2 places 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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Verified16 Widely accepted1 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

2 places

late neolithic atlantic1

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Long barrows Verified Partially excavated Clear all

✓Verified

🇬🇧 United Kingdom · Megalith

West Kennet Long Barrow — Ancillary Ditch Segment

Late Neolithic to Early Bronze Age (3000–1800 BCE) · Late Neolithic Atlantic

West Kennet Long Barrow — Ancillary Ditch Segment in England, Wiltshire, Avebury, United Kingdom is a Late Neolithic to Early Bronze Age (3000–1800 BCE) me…

✓Verified

🇬🇧 United Kingdom · Megalith

Horslip Long Barrow

Early Neolithic · Cotswold-Severn

Long barrow southeast of Avebury henge, 40 m, part of WHS barrow cemetery, c.3750 BCE.