A journey into the mysterious underground world of one of Japan's largest limestone caves
Located in the mountains of Iwaizumi Town in Iwate, the Ryusendo Cave is one of Japan's three largest limestone caves. It is estimated to extend for more than 5000m underground, 4088m of which have actually been explored to date, and to reach depths of about 195m. Currently, approximately 700m are open to the public. The cave has an average annual temperature of 10°C and is well known for its crystal clear ‘Dragon Blue’ underground lakes, three of which are accessible to visitors. The mineral rich waters of the cave are consumed daily by the people of Iwaizumi and are even used to make regional products. There are five types of bats that inhabit the cave. The most commonly sighted are the greater horseshoe bats, and winter affords the best opportunities to see them hanging from the limestone ceilings. Just remember that they are protected animals, so please admire them from afar and do not touch them. What are you waiting for to start a journey into this mysterious world and explore the hidden beauties of the Ryusendo Cave?