Masters of water tech

Petra (The Red Rose City) was the glittering capital of the Nabataean empire of King Aretas IV (9 B.C. to 40 A.D.).It was On the edge of the Arabian Desert.One of the new seven wonders of the world.Arabian desert The Nabateans became extremely wealthy from the caravans, and the city grew to an estimated 30,000 people.The ancient desert city of Petra,Jordan An important center for commerce, where Arabian incense, Chinese silks, and Indian spices were traded.Petra as the capital of the Nabataeans and the center of their caravan trade. Enclosed by towering rocks and watered by a perennial stream, Petra not only possessed the advantages of a fortress, but controlled the main commercial routes which passed through it to Gaza in the west, to Bosra and Damascus in the north, to Aqaba and Leuce Come on the Red Sea, and across the desert to the Persian Gulf.Excavations have demonstrated that it was the ability of the Nabataeans to control the water supply that led to the rise of the desert city, creating an artificial oasis. The area is visited by flash floods and archaeological evidence demonstrates the Nabataeans controlled these floods by the use of dams, cisterns and water conduits. These innovations stored water for prolonged periods of drought, and enabled the city to prosper from its sale.Al Khazneh is one of the most elaborate temples in the ancient Edomite city of Petra. As with most of the other buildings in this ancient town, including the Monastery, this structure was carved out of a sandstone rock face.  It has classical Greek-influenced architecture, and is a popular tourist attraction.Al Khazneh is one of more than 800 monuments in Petra. Much of the city is still underground.Al Khazneh, also known as the Treasury, is one of the most impressive sites of ancient Petra.