Gankutsu Hotel, Artificial cave complex in Yoshimi, Japan.
Gankutsu Hotel is an artificial cave complex in Yoshimi carved into tuff rock, stretching over 100 meters in length. The system contains horizontal tunnels distributed across two separate levels throughout the excavation.
Farmer Takahashi Minekichi began excavating this cave system in 1904, spending 21 years on the project. During World War II, sections were converted into a munitions factory with additional tunnels constructed for access.
The name Gankutsu comes from local residents watching Minekichi's daily digging work and naming the cave after his efforts. The site reflects how one person's dedication became woven into the identity of this small town.
The original cave is no longer open to visitors, but the adjacent Gankutsu Store offers themed souvenirs and serves traditional Japanese dishes including soba and udon noodles. The shop provides a way to experience the site's history while enjoying local food.
Minekichi advanced roughly 30 centimeters per day, a modest amount that over 21 years accumulated into an extensive network. This steady pace demonstrates how patience and determination can transform even the hardest rock.
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