Yes I think you are right – ho for more knowledge of the subject (very frustrating) it was in a very deep overhang that I crawled into.
There is a very good cave called Al Falah Al Hota in the same area: about 5 klicks long and was once a good day out for the more adventurous (Abseil one end & less difficult climb the other) Depending how one looks at it; spoiled now by being a tourist area with a small train….! But it has some superb deposits.
David A Lockwood 
This looks like it must be a limestone. Like the inside of a karst cave.
Yes I think you are right – ho for more knowledge of the subject (very frustrating) it was in a very deep overhang that I crawled into.
There is a very good cave called Al Falah Al Hota in the same area: about 5 klicks long and was once a good day out for the more adventurous (Abseil one end & less difficult climb the other) Depending how one looks at it; spoiled now by being a tourist area with a small train….! But it has some superb deposits.
David.