basically what happen is that I did this tomb in Egypt that had the eyes thing now I don’t really care for it but I do care about the relics well during the time they got back and die for some reason I lost those relics and others so I’m just curious is it safe to delete a tomb and put the same one that new in that place or will it break the game

It's safe to bulldoze tombs and that shouldn't affect your collected rellics. You can replace it with the same tomb saved in the library from brand new untouched world.

About this replacement I'm worried about the relation between it and the adventure board.

Edit: I think there were already build in system in the game that resets the tombs, but not sure if it resets everything in it's untouched state.