Ain Heet Cave is one of 1,826 caves and dunes distributed across twelve regions of the Kingdom of Saudi Arabia . It contains a water well about fifteen m deep that consists of limestone and anhydrite rocks. The cave is located southeast of Riyadh City , near al-Kharj Governorate . The Quality of Life program , one of Saudi Vision 2030 programs, listed it among the top fourteen landmarks for tourist and guided tours in Riyadh Province . Ain Heet Cave entrance The entrance to the cave is about s...