{"id":128,"slug":"treadwell-mining-complex-douglas-alaska","story":[{"heading":null,"paragraphs":["Treadwell is the drowned — the 'sea filled' that's the '17 night, the 'three million tons' that's the water's rush. The '350 out' is the saved — the 'two hours' that's the escape made, the 'horses lost' that's the below's dead. The 'largest world' is the was — the '$70 million' that's the gold pulled, the 'stamp mills' that's the thunder kept.","The 'fault knew' is the warned — the 'cracks '17' that's the Natatorium's tell, the 'high tide' that's the trigger pulled. The 'geyser spouted' is the showed — the '200 feet' that's the salt's blow, the 'bay now' that's the hole's mask. Treadwell is the surfaced — the 'low tide' that's the dishes shown, the 'beach tailings' that's the dog walkers' sand.","The file keeps Treadwell: the drowned mines, the saved 350, the known fault, and the surfaced dishes.","Treadwell is the archive's Alaska file — the world's largest mine the sea swallowed."]},{"heading":"Why this file matters","paragraphs":["Treadwell is the archive's Alaska file — where the ocean took the world's biggest gold mine in one night.","A mine keeps its water — the file's suggestion being that Treadwell's hold is the filled: the 'sea rushed' that's the '17 end, the 'men out' that's the luck held, and the 'bay looks natural' that's the wound healed wrong."]}],"name":"Treadwell Mining Complex","aliases":["Treadwell Mine and Town Sites"],"type":"MINE","type_label":"Mine","cats":["DARK_HISTORY","GHOST_TOWN","ABANDONED_INDUSTRIAL_SITE","MINE"],"groups":["dark-history","ghost-towns"],"desc":"Industrial ruins of a large Douglas Island mining complex.","full_desc":"Treadwell Mining Complex is a mine in Douglas, Alaska. Industrial ruins of a large Douglas Island mining complex. HauntHunt files it with abandoned industry, dark history and mines. The dossier holds 2 documented facts — the record is history-forward, no paranormal claims on file. The site is open to visitors. For HauntHunt it is exactly the kind of file the archive exists for: a real place, a real record, and a story still being told.","address":null,"city":"Douglas","county":null,"state":"Alaska","postal":null,"region":"West","lat":null,"lon":null,"coord_kind":null,"status":"HISTORIC_SITE","access":"PUBLIC","access_notes":null,"ownership":null,"website":null,"phone":null,"year_built":null,"year_opened":null,"year_closed":null,"year_demolished":null,"designation":null,"current_use":null,"research_notes":"Municipal page distinguishes industrial ruins from surrounding residences. Do not misdate the main collapse to 1922 or infer that the whole neighborhood is abandoned.","stage":"SOURCE_RESEARCH","quality":{"level":"MEDIUM","score":67.9,"dims":{"location_confidence":0.75,"identity_confidence":0.85,"historical_confidence":0.8,"source_quality":1,"paranormal_claim_provenance":null,"coordinate_confidence":0,"current_access_confidence":0.7,"freshness":0.65}},"claims":[],"history":[{"description":"Municipal history records a 1917 cave-in flooding three mines; the separate Ready Bullion mine continued until 1922. Treadwell Mining Complex's documented past — geological and human — is the verified layer beneath the legends. It's verified history: the dossier's load-bearing detail. Sources including 'Historic Neighborhoods: Treadwell' carry the record. Documented ground is what separates this file from pure legend — this is part of it.","evidence":"HISTORICALLY_VERIFIED","date_start":null,"date_end":null,"confidence":null,"source":{"name":"Historic Neighborhoods: Treadwell","url":"https://juneau.org/community-development/historic-neighborhoods","publisher":"City and Borough of Juneau","type":"GOVERNMENT","authority":1}},{"description":"The April 1917 collapse flooded the Treadwell workings with seawater, ending operations; the ruins remain. The record dates it to 1917-04-21. Treadwell Mining Complex's documented past — geological and human — is the verified layer beneath the legends. The record holds it as fact — documented, not retold. The record appears in 'Treadwell gold mine'. The entry's timeline holds it; the lore holds the rest.","evidence":"HISTORICALLY_VERIFIED","date_start":"1917-04-21","date_end":null,"confidence":null,"source":{"name":"Treadwell gold mine","url":"https://en.wikipedia.org/wiki/Treadwell_gold_mine","publisher":"Wikipedia","type":"ENCYCLOPEDIA","authority":4}}],"legends":[],"entities":[],"events":[{"name":"Treadwell collapse","type":"DISASTER","date_start":"1917-04-21","date_end":null,"description":"On April 21, 1917, the sea broke through into the Treadwell mine's workings — the greatest gold complex of its era, which had tunneled beneath Gastineau Channel itself — and the flooded mine never reopened. The ruins, slowly consumed by saltwater and forest, now form a heritage trail where building shells stand above drowned shafts.","evidence":"DISASTER","source":{"name":"Treadwell gold mine","url":"https://en.wikipedia.org/wiki/Treadwell_gold_mine","publisher":"Wikipedia","type":"ENCYCLOPEDIA","authority":4}}],"investigations":[],"encounters":[],"media":[],"persons":[],"visitor":{"tour_availability":"Verify before visiting","notes":"Access details are unverified; research before visiting.","last_verified_at":"2026-09-18 11:32:55","source":{"name":"HauntHunt generic access guidance","url":"https://haunthunt.com/about#access-guidance","publisher":"HauntHunt editorial","type":"DIRECTORY","authority":2}},"sources":[{"name":"Historic Neighborhoods: Treadwell","url":"https://juneau.org/community-development/historic-neighborhoods","publisher":"City and Borough of Juneau","type":"GOVERNMENT","authority":1},{"name":"Treadwell gold mine","url":"https://en.wikipedia.org/wiki/Treadwell_gold_mine","publisher":"Wikipedia","type":"ENCYCLOPEDIA","authority":4}],"conflicts":[{"field_name":"short_description","existing_value":"Industrial ruins of a large Douglas Island mining complex.","incoming_value":"The greatest gold mine in the world—until the sea took it in 1917.","notes":"Preserve both source-backed variants; no automatic overwrite."},{"field_name":"full_description","existing_value":"Treadwell Mining Complex is a mine in Douglas, Alaska. Industrial ruins of a large Douglas Island mining complex. Municipal history records a 1917 cave-in flooding three mines; the separate Ready Bullion mine continued until 1922.","incoming_value":"The Treadwell complex on Douglas Island was once the largest gold mine in the world—until April 1917, when the sea flooded the workings, collapsing the tunnels and ending an era.","notes":"Preserve both source-backed variants; no automatic overwrite."},{"field_name":"current_status","existing_value":"HISTORIC_SITE","incoming_value":"ACTIVE","notes":"Preserve both source-backed variants; no automatic overwrite."},{"field_name":"research_notes","existing_value":"Municipal page distinguishes industrial ruins from surrounding residences. Do not misdate the main collapse to 1922 or infer that the whole neighborhood is abandoned.","incoming_value":"Lore enrichment; VERIFY task auto-queued.","notes":"Preserve both source-backed variants; no automatic overwrite."}],"wiki":null,"counts":{"claims":0,"history":2,"legends":0,"entities":0,"sources":2}}