A massive underground vault shrouded in darkness
that totals 2 km in length.
Formerly a major base for
the Imperial Japanese Navy Air Service.
Kaiyama Underground Vault
This underground vault is located in Oppama, a former major base for the Imperial Japanese Navy Air Service, and it was said to have totaled over 2 km in length. There are rooms large enough for a truck to fit in, rooms possibly used for storage, and other remnants of the past.
To everyone who is considering visiting Yokosuka
Please be aware of the prevention of infection based on the "new lifestyle" such as wearing a mask and washing your hands thoroughly.
Information Basic information
5-2931-63 Urago-cho, Yokosuka |
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Take a bus from Oppama Station and walk 5 minutes from PURIFICATION CENTER bus stop. |
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Cost Varies Based on Guide |
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9：00～17：00 |
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New Year's Holidays |
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Natsushima Park Parking Lot Available Nearby |
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046-822-9561 Park Administration Div., Yokosuka City |
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