The value of exploring tombs for the purpose of illuminating ancient cultures is inestimable. It seems humans have always been happy desecrating burial sites if not for treasure then to prove dominance over another tribe or nation.

Of course some exploitation is beyond permissible. Back in the 18th and 19th centuries there was an artist's pigment called Mummy Brown. It was sold for many decades, a rich, transparent brown unlike other brown pigments. It was made from actual mummies scrounged from unknown sources in Egypt. These were not the remains of royalty, rather these mummies were those of common people. Apparently until the early 20th century there was an ample supply of these remains to satisfy demand. Eventually the availability of mummies diminished and by 1915 the pigment quality became erratic and subsequently disappeared from the marketplace.

Comparatively, respectful exploration of ancient tombs is a whole different program than things our species has demonstrated a willingness to do.