Valley of the Kings is extensive. The tomb has been newly restored and opened for visitors. By the end of the New Kingdom, Egypt had entered a long period of political and economic decline. The priests at Thebes grew more powerful, and they effectively administered Upper Egypt, while kings ruling from Tanis controlled Lower Egypt. Some attempt at using the open tombs was made at the start of the Twenty-first Dynasty, with the High Priest of Amun, Pinedjem I, adding his cartouche to KV4. The Valley began to be heavily plundered, so during the Twenty-first Dynasty the priests of Amun opened most of the
Valley of the Kings that there are at least seven active flood stream beds leading down into the central area of the valley. This central area appears to have been flooded at the end of the Eighteenth Dynasty, with several tombs buried under metres of debris. The tombs KV63, KV62, and KV55 are dug into the actual wadi bedrock rather than the debris, showing that the level of the valley was five meters below its present level. After this event later dynasties leveled the floor of the valley, making the floods deposit their load further down the valley, and the buried tombs were forgotten