A sarcophagus is a box-like funeral receptacle for a corpse, most commonly carved in stone, and usually displayed above ground, though it may also be buried. The word ‘sarcophagus’ has Greek origins with sarx meaning ‘flesh’ and phagein meaning ‘to eat’, hence sarcophagus means ‘flesh eating’; from the phrase lithos sarkophagos . Since lithos is Greek for ‘stone’, lithos sarcophagos means ‘flesh-eatin stone’. The word also came to refer to a particular kind of limestone that was thought to rapidly facilitate the decomposition of the flesh corpses contained within it due to the chemical properties of the limestone.
This particular sarcophagus you’re looking for doesn’t contain a corpse, nor is it stone, it is entombed however it may contain a mummy.
It isn’t the temple of doom nor will you be cursed for opening, enjoy the hunt from being a real life archeologist.