Valley of the Kings the actual tomb of Tutankhamun (KV62) in November 1922. Various expeditions have continued to explore the valley, adding greatly to the knowledge of the area. In 2001 the Theban Mapping Project designed new signs for the tombs, providing information and plans of the open tombs. The earliest tombs were located in cliffs at the top of scree slopes, under storm-fed waterfalls (KV34 and KV43). As these locations were filled, burials descended to the valley floor, gradually moving back up the slopes as the valley bottom filled with debris. This explains the location of the tombs KV62 and KV63 buried in
Minor tombs in the Valley of the Kings sons. The identity of the intended princly occupant of this tomb remains unknown but it has been suggested that this might have been the later Ramesses IV. Burton's clearance of the tomb yielded no material of New Kingdom date and therefore it has been supposed that the tomb was never used for a burial. Later intrusive material from Byzantine times suggest the tomb was adapted as a Christian chapel by Copts. KV12 is located in the main valley and has been open since antiquity. It was cleared by Ernest Harold Jones in 1908-09 for Davis, while in 1920-21 Howard Carter