Some of those tombs are said to be booby-trapped with crossbows and whatnot. Surely after so long these raps are kind of useless now assuming natural air leaks and ground erosion underneath has lead to some form of corrosion/oxidation etc?
Fascinating though hearing about these and that some may remain sealed forever (Indian one) due to the whole country and government believing in the curses. Just imagining billions to trillions of $ worth sitting there underground never to be seen again boggles the mind.