Byakko-do Cave is named after “White Tiger,” one of the four gods that govern the four directions in China. It is characterized by columnar joints formed by volcanic activity about 1.6 million years ago, and is particularly attractive for its horizontal columnar joints and their cross sections, which can be observed up close. In this cave, there is a stone with a heart-shaped cross section, which is known as a power spot for “fulfilling love. It is also known as a power spot for “love fulfillment.” If you visit, you can try to find the heart-shaped cross section of the stone.