[jerod]

If I’m burying a dude with a sh*t ton of gold I’m thinking to myself... He doesn’t need it... Maybe I’ll go back and get it... Doh!

Most of these entombments were ‘disturbed’ shortly after the entombment. With the amount of people involved the idea that they would remain untouched is nonsense. Somebody is going to go back and get that loot.

The most amazing find, and likely the only amazing find that ever will be, was Tutankhamun’s tomb... Everybody who was involved in anyway with his burial obviously perished shortly after his burial. Otherwise, one of them would’ve returned to cash in... Since nobody did we can only assume that they all perished from some calamity.

Researchers should be studying the earths condition during the year 1323 BC to see if any volcanos, earthquakes or tsunami’s occurred in the area of Egypt during that time that may have resulted in mass casualties.

[jimtorr]

Tutankhamun died (possibly was murdered) during a very turbulent time. Civil war and possibly religious war.

[Ancesthntr]

“Since nobody did we can only assume that they all perished from some calamity.”
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The “calamity” could have been ordering all of the workers to be killed, and then the killers were, themselves, killed by others who had no idea where the tomb was located. I will grant that it was certainly a calamity for those who were killed, but I doubt that it was a big natural disaster or anything like that.

[Harmless Teddy Bear]

IIRC Tutankhamun’s tomb actually was looted, just not cleaned out. The tomb makers tended to go back in and help themselves to a few choice bits over an extended period of time. Since the tomb it's self was a small one you would have had fewer builders and so fewer families who knew the location.

A local out break of some kind could have killed the people who knew where it was.