[Iwate] Ryusendo Cave, one of the three largest limestone caves in Japan

Ryusendo Cave is a limestone cave located in Iwaizumi Town, Iwate Prefecture, and is also known as Iwaizumi Spring Cave.
With a total length of approximately 1,200m and a height difference of approximately 249m, it is counted as one of the three major limestone caves in Japan, along with Akiyoshido Cave in Yamaguchi Prefecture and Ryugado Cave in Kochi Prefecture.
The actual length is said to be even longer, but has not been fully investigated. Additionally, in 1938, it was designated as a national natural monument under the name ``Iwaizumi Yukutsu and Bats'' along with the five species of bats that live inside the cave.

Mysterious underground lake with famous spring water

Photo by sayo ts – _DSC0907 a limestone cave / Size-adapted.

Iwaizumi Town is a village located in the mountains, so access is not very good, but it is a very nice place with a rich natural environment.
A large amount of clean water flows out from Ryusendo Cave in the form of a river, and a promenade has been established around the clear river. You can tour the inside of the limestone cave for a fee.
There are various attractions inside, such as ``Dragon Deep'' and ``Soundless Falls,'' but the most important thing is definitely the underground lake.
It is famous that there are seven underground lakes in total, and the mysterious blue that seems to suck you in is said to be dragon blue, so it is worth seeing. The underground lake's spring water is also famous as a famous water, and was selected as one of the 100 famous waters in 1985 as "Ryusendo Cave Water".

You can also enter the Ryusendo Shindo Science Museum, which is located across the road from Ryusendo Cave, with the Ryusendo Cave admission ticket.
Stone tools and pottery excavated inside Ryusen Shindo Cave, which was newly discovered during tourism development work, are on display.

INFORMATION