Heh, "Black Sun", Temu, the Sun of NIght in Egyptian mythology... anyway, the precis is, the third team to do the radar gig inside Tut's tomb also scanned around the vicinity in the Valley of the Kings, and turned up one unknown void, probably a tomb, and another void, which is probably natural. There is plenty of room for unknown tombs to be riddled through the cliff faces and so on. Also, Reeves (who seems to see the tomb of Nefertiti lurking everywhere) detected another pit tomb, similar in size to KV-63, but excavation has never been permitted (63 wasn't a tomb per se, as it turned out) on what may end up being KV-64.
If I recall correctly (and this from 4 decades ago) Velikovsky speculated in one of his books that the body of Nefertiti had been found in a pit not far from Tut’s tomb. He suggested that Nefertiti’s mummy had been dragged from a tomb and tossed into the pit (along with others) by grave robbers. However, I’m not going to go back and reread all of Velikovsky’s books to confirm this hazy memory.