The temples of Philae at Aswan, dating from the Thirtieth Dynasty to the Roman period. The original island on which the temples stood was submerged after the construction of the High Dam in the 1960's. The buildings were moved to a higher neighboring island that was 'landscaped' to resemble the original one in shape. At Aswan, the Nile runs through an area of granite, and the hard, rocky outcrops in the river, around and over which the water swirls and cascades, form the last of a series of cataracts that obstruct the river's course from south to north.