The are a number of connected tunnels under

Hiyoshi Strand of ginkgo trees at Keio University is a part of the city of Yokohama, Kanagawa Prefecture, Japan. It is located within Kōhoku Ward in the northeast of Yokohama City. Overview It is served by Hiyoshi Station on the Tōkyū Tōyoko L ...

Yokohama is the second-largest city in Japan by population and the most populous municipality of Japan. It is the capital city and the most populous city in Kanagawa Prefecture, with a 2020 population of 3.8 million. It lies on Tokyo Bay, south of To ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. The tunnels served as the headquarters of the

combined Fleet The was the main sea-going component of the Imperial Japanese Navy. Until 1933, the Combined Fleet was not a permanent organization, but a temporary force formed for the duration of a conflict or major naval maneuvers from various units norm ...

of the

Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender ...

from September 1944. The location was leased to the navy from the Hiyoshi campus of

Keio University , mottoeng = The pen is mightier than the sword , type = Private research coeducational higher education institution , established = 1858 , founder = Yukichi Fukuzawa , endowmen ...

. The Association to Preserve the Hiyoshidai Tunnels was founded in the 1980s, and has conducted guided tours to raise awareness of the heritage site. It has had difficulty getting engagement from the University and the government to preserve the tunnels, and some parts have been destroyed during campus development. The tunnels were surveyed in a government survey of some 850 World War II sites and were ranked "A", described as “a historic site essential to the understanding of our modern national history.”

References

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External links

日吉台地下壕保存の会 (Hiyoshi tunnels preservation association) website
(In Japanese) 1944 establishments in Japan Tunnels in Japan Imperial Japanese Navy Headquarters in Japan Military headquarters in Japan

See also

References

External links