Majlis al Jinn, also Majlis al-Jinn 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. It is a giant cave room with natural lighting through three holes in the ceiling. Majlis al Jinn is single, 58,000 m2 large and up to 120 m high cave room formed by karst processes.
