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This is a break-through into a karst terrain, fairly common in the region, which is underlain by Paleozoic sedimentary rock. This is NOT a "meteorite hole". There are a number of these skylights, especially in Oman - including the famous 'Ubar site. One opens to a cave big enough to hold several 747 aircraft.
During one crossing of the deep Empty Quarter (from al-Shorurah to al-Karkeer to the Wabar asteroid impact site to Dhahran), I used a VLF-EM system and could map groundwater within 60 meters of the surface. It appears that water falling historically and prehistorically in northern Oman and northern Yemen eventually makes its way to the Gulf as a highly alkali groundwater.
==Jeff Wynn
US Geological Survey
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This is a break-through into a karst terrain, fairly common in the region, which is underlain by Paleozoic sedimentary rock. This is NOT a "meteorite hole". There are a number of these skylights, especially in Oman - including the famous 'Ubar site. One opens to a cave big enough to hold several 747 aircraft. During one crossing of the deep Empty Quarter (from al-Shorurah to al-Karkeer to the Wabar asteroid impact site to Dhahran), I used a VLF-EM system and could map groundwater within 60 meters of the surface. It appears that water falling historically and prehistorically in northern Oman and northern Yemen eventually makes its way to the Gulf as a highly alkali groundwater. ==Jeff Wynn US Geological Survey
صور رائعة البوم مميز تحيات م علاء سعيد من ليبيا الحرة like
These caves were used as a supply dump, resting place and hospital for the Yemen communist(Adoo)/insurgent Jabalis in 1970's insurgency.