Divers explore the unique Yab Yum cave. Close to 100 metres in diameter and more than 70 metres deep, it is considered the largest water-filled sinkhole that has ever been documented.
Alex Dawson, Mexico – Ocean adventure
An expert panel has concluded that a sinkhole that swallowed a truck in Yashio, Saitama Prefecture, in January was created due to corrosion of a sewer pipe by hydrogen sulfide. https://www.japantimes.co.jp/news/2025/09/05/japan/saitama-sinkhole-cause/?utm_medium=Social&utm_source=mastodon #japan #sinkholes #saitama #yashio #sewage #motohiroono