There's an old rumor that says Howard Carter, the discoverer of Tutankhamun's tomb, found several other tombs, but took the location to the grave.
With all the recent discoveries of tombs in the Valley of the Kings, an old rumor has surfaced that Howard Carter, during his years of working in the Valley of the Kings, not only found Tut's tomb, but located several others as well. The problem was that he believed he was treated badly by the Egyptian government, so he pledged not to reveal the location of these tombs, in protest of his treatment.
Whether true or not, he did indeed die without ever telling a soul where the other tombs were. It certainly would have been helpful to have the locations, but with all the archaeologists crawling over the Valley now, more tombs are bound to be uncovered soon anyway. If the scientists proceed slowly and methodically, they'll be able to plot out the entire Valley eventually. One day, the final resting places of kings and queens will be revealed, but it sure would have been easier with Carter's help.
