↑↑↑↑↑↑↑↑↑ ↑↑ ↑↑    According to the popular legend in Japan, the god Kashima using the kaname-ishi rock restrained a namazu 地震鲶鱼, a mythical giant catfish, who caused the Great Ansei Earthquake stricking the city of Edo (now Tokyo) in November 1855 by thrashing about in their underground lairs. You can find more about namazu in the link where I used a copy of the picture above.   http://pinktentacle.com/2011/04/namazu-e-earthquake-catfish-prints/