Wadi Rum also known as The Valley of the Moon is a valley cut into the sandstone and granite rock in southern Jordan 60 km to the east of Aqaba; it is the largest wadi in Jordan. "Wadi Rum" incidentally is the name now given to the whole area lying roughly between Rum Village and the border of Saudi Arabia. Originally "Wadi Rum" was the valley between Jebel Rum and Jebel Um Ishrin only, and it is here that the village has been built, close to the fort which originally protected the spring. Sheer-sided mountains of sandstone and granite emerge from burnt orange sands to reach heights of over 1700 meters above sea level. Wadi Rum is home to the Zalabia Bedouin who, working with climbers and trekkers, have made a success of developing eco-adventure tourism, now their main source of income.