This strange wonder is found on Oman’s east coast approximately 1 hour and 45 minutes from Muscat. It’s basically a huge hole/cave like structure filled with water from the close by ocean. The water is azure blue and there are plenty of places to climb up the rocks and jump into the clear water. It is commonly called the Sink Hole and got its name from its sink-like shape, filled with water. The water has a very high salt level caused by evaporation.