Valley of the Kings French Consul-General and a great rival of Belzoni and Salt. When Gaston Maspero was reappointed as head of the Egyptian Antiquities Service, the nature of the exploration of the valley changed again. Maspero appointed English archaeologist Howard Carter as the Chief Inspector of Upper Egypt, and the young man discovered several new tombs and explored several others, clearing KV42 and KV20. Around the start of the 20th century, American explorer Theodore M. Davis had the excavation permit in the valley. His team (led mostly by Edward R. Ayrton) discovered several royal and non-royal tombs (including KV43, KV46 and KV57). In
Valley of the Kings Ramesses II returned to an early style, with a bent axis, probably due to the quality of the rock being excavated (following the Esna shale). Between 1998 and 2002 the Amarna Royal Tombs Project investigated the valley floor using ground-penetrating radar and found that, below the modern surface, the Valley's cliffs descend beneath the scree in a series of abrupt, natural "shelves", arranged one below the other, descending several metres down to the bedrock in the valley floor. The area of the Theban hills is subject to infrequent violent thunderstorms, causing flash floods in the valley. Recent studies have shown