Hiyoshi tunnels

The Hiyoshi tunnels (日吉台地下壕 Hiyoshidai chikagō) are a number of connected tunnels under Hiyoshi, Yokohama, Japan. The tunnels served as the headquarters of the combined Fleet of the Imperial Japanese Navy from September 1944. The location was leased to the navy from the Hiyoshi campus of Keio University.

Hiyoshi tunnels

The Hiyoshi tunnels (日吉台地下壕 Hiyoshidai chikagō) are a number of connected tunnels under Hiyoshi, Yokohama, Japan. The tunnels served as the headquarters of the combined Fleet of the Imperial Japanese Navy from September 1944. The location was leased to the navy from the Hiyoshi campus of Keio University.