Yanagisawa Tunnel, Yamanashi: Separating the Pass from the Legend

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Yanagisawa Pass (柳沢峠) is a real mountain pass in Koshu City, Yamanashi Prefecture, at 1,472 meters, carrying National Route 411 (the Ome Kaido).

The real history

Until the Meiji era, the Ome Kaido crossed the far more treacherous Daibosatsu Pass (1,897 meters), with a documented history of travelers dying en route. In 1878, a new road was cut through Yanagisawa Pass instead, judged more practical for cart traffic, and the highway route shifted permanently.

What we could not verify

We found no reliable, sourced account of a specific “Yanagisawa Tunnel” ghost story — no named haunting or documented fatal accident. Other Yamanashi sites, like the Old Misaka Tunnel near Kawaguchiko, have much better-documented haunted reputations tied to 1930s construction deaths. Yanagisawa appears rarely in Japanese ghost-spot compilations, usually as a brief, vague, unsourced mention of a woman in white kimono along Route 411.

Our conclusion

Yanagisawa Pass has solid, verifiable transportation history dating to 1878. The ghost stories attached to it appear thin and possibly conflated with better-documented sites elsewhere in Yamanashi.

Can you visit: Yes. It is on an active national highway.

Why Japan Has So Many Haunted Tunnel Legends

This site has now covered dozens of Japanese tunnels with near-identical ghost-story structures, and the pattern itself has a plausible, unsensational explanation. Japan built an enormous amount of mountain and rural road infrastructure in two distinct eras — pre-war/wartime construction that genuinely did rely on forced or dangerous labor in some documented cases, and the postwar/1960s highway-expansion boom that cut hundreds of short tunnels through remote terrain on tight schedules. Tunnels are also structurally suited to ghost stories independent of any real history: they’re dark, acoustically strange, single-entry, and often built near or through older burial ground because that was the cheapest available land. A story doesn’t need a real death to take root in a place that already feels wrong to drive through alone at night.

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