The old city of Hasankeyf, built besides the old mosque of the fortress, also lies in ruins. Some 30 years ago its inhabitants were forced by the government to abandon their centuries old houses, many of which were carved in the limestone, to come down and settle in the valley. The bitter irony of the story is that now the new city of Hasankeyf is under threat, doomed to disappear under water in 5 or 6 years after the new Ilisu dam is built farther down the valley within the framework of the Southeast Anatolia Project (GAP)

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