Boulder of crystalline limestone, Jimmu Mine, Sogo, Mihara-shi, Hiroshima, 2021

Boulder of crystalline limestone, Jimmu Mine, Sogo, Mihara-shi, Hiroshima, 2021 by Katsuaki Watanabe

結晶質石灰岩の転石（広島県三原市宗郷神武鉱山）