Hawiyyat Najm, known as Bimmah Sinkhole in English, is a water-filled depression, structurally a sinkhole, in the limestone of eastern Muscat Governorate in the Sultanate of Oman, very close to the Al Sharqiyah region just off the highway to Sur, few kilometers before Tiwi.
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Address Oman
Coordinates 23°2'9.008" N 59°4'18.96" E