洞窟

Located at the coast of Hitachi City, Ibaraki Pref, Japan.

Dead-end

Unfortunately, it is now prohibited to enter this cave.

There are some lights set inside the cave. But you’ll need your lights for safety.

You’ll need a permission of land owner if you want to go.

“Ochromonas vischeri”

Relatively clean I think. You need to crawl at some points.

Located in Hitachi City. A house of wild animals.

Located very close to Suwa cave.

It might be not allow to enter this cave now.