Nothing remains here - only walls.

Most of these tombs have already, since ancient times, been looted and desecrated and most things inside including any human remains have long since been removed. It looks like this tomb is also in this category as all that remains of note are on the walls which cannot be easily removed.

I seem to recall a story that even at the time when they were building pyramids in ancient Egypt that they had a problem with looters of the older tombs.

Additionally: The use of the word "Sealed" in the title is not present in the text and I propose is click bait for attention and an emotional reaction. Looks like that strategy still works.