located in Dabab village, 113 KM from Muscat. There are various stories behind the formation of Sinkhole. local inhabitants have a legendary story where by its meteorite fill in this location as its name indicates in Arabic " Hawiyat Najam" translates into English to " The Falling Star". Yet upon scientific research conducted by experts and geologists confirmed that the crater was formed as natural consequence oh the interaction of dissolving limestone located at this location, which contain carbonate with water, which resulted in the collapse of earth upper crust layer