The Hyakumangan no Iwa Rock is a huge sandstone boulder belonging to the Tetori Group - a unit of sandstone from the Jurassic to Cretaceous period (201 to 66 million years ago). It is believed to have been washed down from the Miyatani River during a big flood in 1934.
This is a Prefectural Natural Monument and selected as one of the 100 best geological examples in Japan. It is about 16 meters high, 52 meters around and weighs approximately 4,800 tons.
INFORMATION
Access
• Car:
A small parking space is available for visitors.
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