No translations for '大地の成り立ち' - No translations for '火山島の時代の岩石'
No translations for 'ジオサイト' / No translations for '西ノ島町'
This sea arch was shaped naturally by erosion from the rough waves of the Sea of Japan. It was once the entrance to a sea cave, but landslides caused the back of the cave to collapse and crumble away, leaving the shape we see today.