The Ichimai-iwa of Kozagawa River

The Ichimai-iwa of Kozagawa River

This huge monolith is made of rhyolitic pyroclastic rock of the Kozagawa arc-shaped dike. The 20km long Kozagawa arc-shaped dike was formed about 14 to 15 million years ago when the rhyolitic magma gushed out onto the surface of the earth by the process of the Kumano caldera forming. There is a folk tale of a guard dog of this monolith, and a shadow of a huge guard dog appears on the rock wall every April and August.

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Information

Postal Code
649-4235
Address
Aise, Kozagawa Town, Higashimuro-gun, Wakayama
Date
8 Feb 2021

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