Located in A'Dakhliyah region, the cave is a 2.7 Km tunnel that runs in a north-south direction through the Hajar Mountains and comprises an underground cavern and subterranean lake system. There are many offshoots to the main tunnel, but so far, experienced cavers have charted only approximately 5 Km. Beware of the main bath though.

The subterranean lake is home to unusual species of aquatic animals such as Blind Fish that sense their way around the lake with feelers. The main lake within the cave system is around 800 m long, but please do not be tempted to swim in the waters and disturb the delicate eco-system.

The main chamber of Hotta Cave is around the size of the ballroom of Al-Bustan Palace Hotel and contains some magnificent cave formations, stalactites, stalagmites, and columns that have evolved over millions of years. These beautiful structures are delicately coloured in shades of pink, yellow, gold, beige and grey.