Wakayama, Japan - May 2, 2021 :It is "Senjojiki" in Shirahama Town, Wakayama Prefecture. It is lined with tatami-shaped soft sandstone. The complex white and soft rock shape was created by erosion over many years from the Tertiary layer. The area is about 4 hectares. It got its name from the fact that it can hold about 1,000 tatami mats. It is especially beautiful when the sun sets. This is Yoshino Kumano National Park. Anyone can go here freely.Many tourists visit.