Bimmah sinkhole is beautiful natural landmark – a place of refreshment at the long coastal road of Oman.

Bimmah sinkhole was formed in limestone by a collapse of large cave chamber. Earlier locals believed that this hole was formed by meteorite ("piece of Moon").

The sinkhole is approximately 50 by 70 m large, 20 – 30 m deep. At the bottom is located deep blue-green lake with a heap of rock – remnants of the collapse.

Municipality has developed a park around the sinkhole, there is built concrete stairway leading to the lake. Locals and tourists often enjoy a refreshing bath in the lake.

Bimmah sinkhole, Oman
Bimmah sinkhole / Martyna Zambrzycka Millspaugh, , public domain

Most likely the sinkhole is connected to the 600 m distant sea. Top layer in the lake is crystal clear, but at the depth of some 8 m water has sulfuric taste due to sulfur oxidizing bacteria and is less clear.

Bimmah sinkhole on the map
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Location, GPS coordinates: 23.0360 N 59.0720 E
Categories: Sinkholes, Lakes and streams
Values: Geology, Visual
Rating: 2.5 out of 10 stars
Where is located? Asia, Oman, Muscat Governorate, Wilayat Qurayat, between Bimmah and Dibab, some 600 m from the sea
Alternate names: Bhamah sinkhole, Bimah sinkhole, Bima sinkhole, Hawiyat Najm, Al Faqa’ah, Dibab sinkhole
Depth of sinkhole: 30 m

Landmarks of Oman

Beehiwe tombs of Al-Ayn, Oman
Beehiwe tombs of Al-Ayn / Wikimedia Commons, Figy, public domain.
Southern Arabia is embodyment of fantasies about the mysterious, beautiful Arabia from One Thousand and One Nights. Oman with its breathtaking landscapes and mysterious monuments of history definitely represents a part of this realm.


World's deepest sinkhole - Xiaozhai tiankeng, with tourist route visible
World’s deepest sinkhole – Xiaozhai tiankeng, with tourist route visible / Brookqi, Wikimedia Commons, public domain
Category includes outstanding sinkholes – large natural depressions or holes, which for most part represent collapsed caves.

Recommended books

Introduction to the Caves of Oman

Caves of Oman provides important information on the geology and formation of caves. Within its 128 pages the authors emphasize the main features of every cave, so that Caves of Oman can be used as a guide for visitors and explorers. Ninety maps and graphics are included in addition to 90 photographs. It also provides information on cave formation which started millennia ago through the natural process of melting and eroding.

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