Takamori Spring Tunnel Park (高森湧水トンネル公園) 高森湧水トンネル公園

Unfinished railway tunnel, stopped by water: you walk 550 m of it at 17 °C.

The bore was meant to be part of a 6,480 m tunnel joining the Takamori line (today the Minami-Aso Railway) to the Takachiho line. Work is reported to have begun in 1973; in 1975 a strong inflow of water about 2,000 m from the entrance was followed by others, and in 1980 the excavation, which had reached 2,055 m, was suspended. The tunnel releases about 32 tonnes of water a minute, used by the municipality for drinking water and irrigation. In 1994 the part near the exit, about 550 m of the roughly 2 km excavated, was opened to the public. Inside there is also the 湧水館 (Yūsuikan), a small water museum.

Kumamoto

Takamori, Miharashidai

https://theanimetrip.com/luoghi/tunnel-della-sorgente-di-takamori