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
Akhayat sinkhole Akhayat sinkhole Akhayat (also known as Aşağı Dünya Obruğu) is a sinkhole in Mersin Province, Turkey. The Akhayat Sinkhole is located in a rural area of the Silifke district, to the north of Atayurt town. Its visitors (if there are any) are often from Mersin, and to get to the sinkhole site they follow the Turkish state highway . As for tourism nowadays, it isn't a particularly popular sight, as there is hardly any touristic activity apart from people driving past and see it out of their window, but the Silifke governor mentioned that the site will soon be opened