Though KV5 was partially excavated as early as 1825, its true extent was discovered in 1995 by Kent R. Weeks and his exploration team.It has proven to be the largest tomb in the Valley of the Kings, and originally contained the mummified remains of some of this king's estimated 52 sons. Approximately 150 corridors and tomb chambers have been located in this tomb as of 2006, and the tomb may contain as many as 200 corridors and chambers.[27]