The next stop was the Musfer Sinkhole. The cave extends downward about 50-60m. A large room has formed by the collapse of carbonate material. The cave walls are composed of the upper Dammam dolomite & limestone unit and the lower Dammam laminated shaly & silty unit.
We also found a cache at this site, under some rocks near shrubs.
Along the way, we passed many camps with camels. Occasionally we would see camels walking around unrestrained.