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The Seikan Tunnel opens

Seikan Tunnel, Tsugaru Strait · Aomori / Hokkaido, Japan · 1988-03-13

The Seikan Tunnel opens
tsushima via Wikimedia Commons (Seikan-Tunnel - panoramio.jpg) · CC BY 3.0

Twenty-four years of boring produced the longest undersea rail tunnel of its time, 240 metres below the strait.

The record

Date1988-03-13
PlaceSeikan Tunnel, Tsugaru Strait, Aomori / Hokkaido, Japan
Coordinates41.4, 140.3 (landmark-level precision)
ScopeLocal interest
SourcesWikipedia
Added2026-08-14 · source: editors

Coordinates are given at landmark level. A landmark-level coordinate points at the structure; a city-level one points at the settlement, not at a parcel.

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