a crevice under the shadow of the overhanging rock. I looked in to see the spout, a little thinner than my wrist, jetting out firmly from a fissure in the roof, and falling with that clean sound into a shallow, frothing pool, behind the step which served as an entrance. Thick ferns and grasses of the finest green made it a paradise just five feet square." The discovery of the Nabataean Temple (located walking distance from the Rest House) in 1933 briefly returned the spotlight to the desert. A French team of archaeologists completed the excavations in 1997. Geography The area is centered on the main valley of Wadi Rum. The highest elevation in Jordan is Jabal Umm ad Dami at high (SRTM data states 1854 m), located 30 kilometres south of Wadi Rum village. It was first located by Difallah Ateeg, a Zalabia Bedouin from Rum. On a clear day, it is possible to see the Red Sea and the Saudi border from the top. Jabal Ram or Jebel Rum ( above sea level) is the second highest peak in Jordan and the highest peak in the central Rum, rising directly above Rum valley, opposite Jebel um Ishrin, which is possibly one metre lower. Khaz'ali Canyon in Wadi Rum is the site of petroglyphs etched into the cave walls depicting humans and antelopes dating back to the Thamudic times. The village of Wadi Rum itself consists of several hundred Bedouin inhabitants with their goat-hair tents and concrete houses and also their four-wheel vehicles, one school for boys and one for girls, a few shops, and the headquarters of the Desert Patrol. Recently, Geoff Lawton has achieved success in establishing a permaculture ecosystem in Wadi Rum. Geology Located in the Sandstone Mountain and Valley Region of southern Jordan, Wadi Rum is characterized by tall, near vertical mountains of iron-rich, erosion resistant, Umm Ishrin Sandstone, separated by flat-bottom valleys of alluvial sediments, aeolian sands, and salt pans. The Umm Ishrin is the thickest formation in the Lower Palaeozoic-Upper Cretaceous Nubian Sandstone, underlying the Disi and Umm Sahn sandstone formations, and overlying the Salib Arkosic Formation. The Salib in turn overlies the eroded Aqaba Complex of plutonic granitoids. An aquifer forms along this lithologic contact, with springs forming on the eastern mountain slopes. Alluvial fans compose most of the alluvial sediments. Aeolian systems include tafoni, natural bridges, and sand dunes. Sand dunes