Théodule Devéria help Mariette read inscriptions in Cairo and its surroundings. He tried to accurately document the archaeological sites using drawings, stampings and photographs. His calotype pictures from this trip are often poor in quality, showing a lack of technical skills. In 1860 he was appointed preserving assistant at the Louvre's Department of Egyptology. He revisited Egypt in 1861–62, traveling up the Nile to Philae at the First Cataract, and into Nubia to the Abu Simbel temples. After returning he helped Mariette prepare descriptions of the excavation in Egypt in 1850–54 for publication. In November 1864 Devéria met the future oriental scholar
Egyptian temple from the distorting effect of additional construction. Many temples, known as hypogea, were cut entirely into living rock, as at Abu Simbel, or had rock-cut inner chambers with masonry courtyards and pylons, as at Wadi es-Sebua. They used much the same layout as free-standing temples but used excavated chambers rather than buildings as their inner rooms. In some temples, like the mortuary temples at Deir el-Bahari, the processional path ran up a series of terraces rather than sitting on a single level. The Ptolemaic Temple of Kom Ombo was built with two main sanctuaries, producing two parallel axes that run