Egyptian temple Debod, as gifts to nations that had contributed to the preservation effort. Nevertheless, several other temples vanished beneath the lake. Today there are dozens of sites with substantial temple remains, although many more once existed, and none of the major temples in Lower or Middle Egypt are well preserved. Those that are well preserved, such as Karnak, Luxor, and Abu Simbel, draw tourists from around the world and are therefore a key attraction for the Egyptian tourist industry, which is a major sector of the Egyptian economy. Three temple sites—Ancient Thebes with its Necropolis, Memphis and its Necropolis, and the
Romanian air tours over Africa Philae Island, and hedgehopped over the temples of Ramesses II and Nefertari at Abu Simbel. They entered Sudan and stopped at the customs point of Wadi Halfa. They flew over the second cataract, then cut the meander of the Nile through the desert, along the Wadi Halfa– Abu Hamad railway line up to Railway Station No. 6, where they overnighted. The following day they flew over the fifth cataract, Atbara, and after the sixth cataract they reached Khartum, where they stayed for two days as the engine of Pantazi's aircraft needed overhauling. After a short stage to Kosti, they reached