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Sunken City · Zero-vis dives

Dunwich, Britain's Atlantis

Lost 1286 to 1362 · 3 to 10 m, Off Dunwich, Suffolk, England
ACCESSIBLE
Evidence status: Historical tradition. no documented source (historical tradition); legal status unknown (manual verification recommended). This account is presented as historical tradition, not verified fact. Manual verification recommended. Repository evidence: 0 sources · 0 timeline events · 0 media items · legal unknown · view on the Map Evidence on file: historical tradition

Dunwich, Britain's Atlantis: still unexplained.

A drowned medieval city the size of old London

The law of this ground: Protected wreck-and-ruin field, survey diving by arrangement; the seabed is mapped by acoustics, not by hand.
The subject
developing the photograph…
The manifest
A drowned medieval city the size of old London
The account

Dunwich was one of the great ports of medieval England, eight churches, a mint, a fleet. The storms of 1286 and 1347 ate the coast from under it, street by street, until the last tower went over the cliff. The city lies just offshore in water like cold tea; sonar has mapped its ruins where divers' eyes are useless. Locals say you can hear the bells under the waves. The sonar, less romantic, found the church towers.

Leads, where the trail points now
  • Pin down the most specific last-known position in the record before going; the search centers on Off Dunwich, Suffolk, England.
  • What you are chasing is A drowned medieval city the size of old London. Work the documented record of Dunwich, Britain's Atlantis back to primary sources and separate what is attested from folklore.
  • Protected wreck-and-ruin field, survey diving by arrangement; the seabed is mapped by acoustics, not by hand.
What the record holds

What remains open

  • No period map of the site has surfaced.
  • No contemporary press coverage has been found.
What we know, and what we don't
Established

No documentary claim is yet established. The account rests on tradition.

Still open
  • No period map of the site has surfaced.
  • No contemporary press coverage has been found.
The evidence room

No documentary or visual exhibits have been located yet. The trail below and the open leads are where this dossier grows next — every exhibit that enters here carries a source.

Where the trail points now
  • Pin down the most specific last-known position in the record before going; the search centers on Off Dunwich, Suffolk, England.
  • What you are chasing is A drowned medieval city the size of old London. Work the documented record of Dunwich, Britain's Atlantis back to primary sources and separate what is attested from folklore.
  • Protected wreck-and-ruin field, survey diving by arrangement; the seabed is mapped by acoustics, not by hand.
  • Search Library of Congress + DPLA (IIIF) for period cartography of the site.
  • Run Chronicling America for dated newspaper mentions.
  • Query NARA for archival records tied to the site.

Have a source, a map, or a clipping? Add a lead and it enters the record with its citation.

Start the hunt here
The first leads, so no one walks in cold.
Sources and the record
Related case files

The full hunt kit

Starting brief, what's known and disputed, evidence timeline, source list, map card, coordinate-confidence and legal-access summaries, and a field checklist, free with a Fellowship account.

Latest Word From the Newswire

Context, not proof. The dossier's own sources remain the evidence record.

Checking the wire…

Chart position 52.276°, 1.630° (approx.) View on the Map