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Wonder

Bimmah sinkhole

Lake in Bimmah sinkhole, Oman
Lake in Bimmah sinkhole / naturalbornstupid, / CC BY-SA 2.0

WorldBlue  In short

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

4.2 out of 10 stars 42.3%

GPS coordinates
23.0360 N 59.0720 E
Location, address
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

Map of the site

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WorldYellow In detail

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

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

The sinkhole is approximately 50 by 70 m large, 20 – 30 m deep. At the bottom is located a 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.

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.

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WorldYellow 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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