 The tombs in the West Valley were later incorporated into the East Valley numbering system as WV22 through WV25, and tombs that have been opened since Wilkinson's time have been added to the list.The numbers range from KV1 (Rameses VII) to KV64 (discovered in 2012).Since the early 19th century AD, antiquarians and archaeologists have cleared and recorded tombs, with a total of 61 sepulchers being known by the start of the 20th century.