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
Valley of the Kings as unimportant by previous investigators. The West Valley tombs often carry the prefix "WV", but they follow the same numbering system. Some of the tombs are unoccupied, others remain unidentifiable as regards to their owners, and still others are merely pits used for storage. Most of the open tombs in the Valley of the Kings are located in the East Valley, and this is where most of the tourist facilities are located. The Eighteenth Dynasty tombs within the valley vary quite a bit in decoration, style, and location. It seems that at first there was no fixed plan. The tomb