Narusawa-hyōketsu
| Narusawa-hyōketsu
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 Entrance to the ice cave |
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| Location: | Narusawa , Minamitsuru-gun , Yamanashi Prefecture , Japan | |
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Geographic location: |
35 ° 28 '28 " N , 138 ° 39' 59" E | |
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Narusawa-hyōketsu ( Japanese 鳴 沢 氷 穴 , German "Narusawa Ice Cave") is an ice cave near the village of Narusawa in Yamanashi Prefecture in Japan .
The entrance to the Narusawa Ice Cave is on the western edge of the Aokigahara Forest. It is about 137.2 m long, the floor of the cave is about 21 m below the surface of the earth. It is a lava tube that was formed by the eruption of Mount Fuji in AD 864. The room temperatures fluctuate all year round around freezing point (between −2 ° C and +3 ° C), which is why impressive stalactites made of ice can be seen in it permanently . In the Edo period , ice was harvested and used to cool food. In the Taisho period the cave primarily served as a natural refrigerator for silkworm - cocoons . The Narusawa Ice Cave has been a protected natural monument since 1929 .
literature
- Kuniyasu Mokudai, Mahito Watanabe and others a .: Natural Heritage of Japan: Geological, Geomorphological, and Ecological Aspects . Springer International Publishing, Cham 2017, ISBN 3-319-61896-2 , p. 170.
Web links
- Description of the Narusawa Ice Cave on mustlovejapan.com (English); accessed on January 11, 2018.
- Brief information about the Narusawa Ice Cave in yamanashi-kankou (English); accessed on January 11, 2018.