The Bimmah Sinkhole, located in Hawiyat Najm Park, actually meaning “Meteor Fall” Park in Arabic, is a sinkhole in Muscat Oman. Bimah sinkhole is beautiful natural landmark, the best place see in Muscat for refreshment at the long coastal road of Oman. This exclusive sinkhole is so exquisite, as limestone hollow, in Bimmah, boasts the kind of clear waters normally only seen on holiday postcards. It is approximately 50 by 70 m large, 20 to 30 m deep. The crystal-clear waters provide one of the most picturesque swims in Oman.
It formed so close to the sea because of the increased subterranean water flow that occurred down-gradient. The sinkhole was formed with limestone by a collapse of large cave chamber. However many believed that this sinkhole was formed by meteorite ("piece of Moon"). Moroever, at the bottom of sinkhole, one can see deep blue-green water with a heap of rock and remnants of the collapse. When the roof of one of these caverns collapses, the land above it falls in too, leaving giant holes. When groundwater flows through these rocks, it eats away at the rock, leaving behind subterranean holes and caverns.
The government has developed a park around the sinkhole, built concrete stairway leading to the lake. It’s a refreshing lake to take bath for Locals and tourists. It is well thought, that sinkhole is connected to the 600 m distant sea. Because the top layer of lake is crystal clear, but at the depth of some 8 m water has sulphuric taste due to sulphur oxidizing bacteria and is less clear. Though similar holes engulf residential streets or open up in front of despairing home owners, the Bimmah sinkhole has long been attracting tourists eager for a picturesque swim.