Nudokubiabu

　From Miyako Island, cross the 3.5 km Irabu Ohashi Bridge to Irabu Island. In the middle of an expansive sugar cane field lies the entrance to a cave called Nudokubiabu.
　The cave, which is 22 m deep and 25 m long, has a large vertical hole inside, where a very fantastic sight can be seen, with banyan trees extending their roots from the ground.
　It has recently become a popular power spot, but the downside is that it is difficult to find. There is only a small signboard and no parking space, so you have to park your car on the side of the farm road. A path leads from the side of the sign, but it is covered with trees and can be muddy after rain, so be careful.
　However, once you have visited, you will want to return.