18:35
Hiruzen and Kanba Falls: What is the relationship between geology and the formation of the waterf...
33:48
火山がいっぱい！多良岳の地形 バイクで回りながら解説します
24:36
What is the unconformity in the Saitama-Chichibu Basin? | The Chichibu Belt and Paleo-Chichibu Ba...
32:41
和歌山・南紀海岸 ｜ 本州最南端の地形をバイクで巡って解説します
31:22