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）
Hiroshima
Outcrop of crystalline limestone, Jimmu Mine, Sogo, Mihara-shi, Hiroshima, 2021
Outcrop of crystalline limestone, Jimmu Mine, Sogo, Mihara-shi, Hiroshima, 2021 by Katsuaki Watanabe結晶質石灰岩の露頭（広島県三原市宗郷神武鉱山）
Graphite-bearing crystalline schist, Jimmu Mine, Sogo, Mihara-shi, Hiroshima, 2021
Graphite-bearing crystalline schist, Jimmu Mine, Sogo, Mihara-shi, Hiroshima, 2021 by Katsuaki Watanabe石墨を含む結晶片岩（広島県三原市宗郷神武鉱山）
Sandankyo Gorge, Akiota-cho, Hiroshima, 2021
Sandankyo Gorge, Akiota-cho, Hiroshima, 2021 by Katsuaki Watanabe三段峡（広島県安芸太田町）
Sandankyo Gorge, Akiota-cho, Hiroshima, 2021
Sandankyo Gorge, Akiota-cho, Hiroshima, 2021 by Katsuaki Watanabe三段峡（広島県安芸太田町）
Sandankyo Gorge, Akiota-cho, Hiroshima, 2021
Sandankyo Gorge, Akiota-cho, Hiroshima, 2021 by Katsuaki Watanabe三段峡（広島県安芸太田町）