Bimmah Sinkhole in Arabic, and hence the name. To preserve the sinkhole, the local municipality developed a park, Hawiyat Najm Park (Haweat Najm Park), around it, along with a stairway leading down to the lake. The original cavern formed in the limestone of the Abat formation which lies below the more massive Seeb formation. When the cavern grew too large the rocks of the Seeb collapsed into it forming a sinkhole. It formed so close to the sea because of the increased subterranean water flow that occurred down-gradient. Bimmah Sinkhole Bimmah Sinkhole (Arabic هـويـة نـجـم "Hawaiyat Najm") is a water-filled depression, structurally
Sinkhole through these volcanic deposits and mechanically washed fine volcanic materials out of them, then progressively eroded and removed coarser materials. Eventually, these underground voids became large enough that their roofs collapsed to create large holes. Some of the largest sinkholes in the world are: Sinkhole A sinkhole, also known as a cenote, sink, sink-hole, swallet, swallow hole, or doline (the different terms for sinkholes are often used interchangeably), is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processes—for example, the chemical dissolution of carbonate rocks or