南西より見た火砕丘の断面（赤ダキ断崖）。下部はマグマ水蒸気爆発によるベースサージ堆積物。1986年撮影。

View of sea cliff "Akadaki-dangai" from the SW showing cross-section of Sone pyroclastic cone that consists of phreatomagmatic base surge deposits at the base.