(Actually, archaeologists do not know why some burials were "backwards," but I am free to have it my way here.)
It appears that our archaeologist knows one of them--their chief engineer.
The old archaeologist knew too many of their secrets.
No archaeologist knew why, and the ancient Maya were not saying.
Only God and the archaeologists know the answer to that, but in any case, the alley is certainly an ancient relic and a precious one.
With any luck and good recycling, archaeologists in 10,000 years should never know we ever existed.
That Mary stooped to look into the tomb is consistent with what archaeologists know about tombs from this era.
A past perhaps so distant that the archaeologist knows it where the historian does not.
The archaeologist knows it's actually a potsherd, clay pottery tough enough to withstand the stresses of millennia.
The archaeologist in the film knew that there was a curse upon anyone who entered the pyramid.