Some 2 million years old, this cave is one of the most impressive natural sights in Oman. An ultra-modern monorail takes you from the small museum and exhibition to the cave where your guide will walk you past vast frozen waterfalls of mineral deposits, smooth columns of stalagmites and stalactites formed into veils and rounded knolls over millennia. Aided by artful lighting your guide will point out the most interesting formations and give you some background on the cave and its surprisingly large number of inhabitants.