Akiyoshi-dai+Caves

The Akiyoshi-do Cavern is the Orient's largest limestone cave, located about 100 meters underground. This huge cave, which took 300,000 long years to be formed into what it is today, was made by limestone dissolving away in the ground water. The cave is open to the public as a sightseeing course, where you can enjoy a variety of fantastic sights, like the Ao-Tenjo (blue ceiling) and a rock formation called the Hyakumai-Zara. The temperature inside the cave is always about 62 degrees Fahrenheit you need to be sure to wear clothes with long sleeves even in the summertime.