1858 Hietsu earthquake
The Hietsu earthquake was a doublet earthquake that took place on April 9, 1858. It most likely occurred on the Atotsugawa and Miboro faults, which connect the Amō Pass in Gifu Prefecture and Mount Tate in Toyama Prefecture on the island of Honshū in Japan. Its name includes one kanji from Hida Province and one from Etchū Province. The earthquakes are estimated to have killed 200–300 people. It also caused the Mount Tombi Landslide and blocked the upper reaches of the Jōganji River.
