Majlis al Jinn Rock climbing 2 routes in crag

Majlis al Jinn, also Majlis al-Jinn (Arabic: مجلس الجن‎, meeting/gathering place of the Jinn, local name: Khoshilat Maqandeli) is the second-largest known cave chamber in the world, as measured by the surface area of the floor. It ranks lower when measured by volume. The cave is located in a remote area of the Selma Plateau at 1,380 metres above sea level in the Sultanate of Oman, 100 km south-east from Muscat. Source Wikipedia