What are the explorers trying to discover in the underground tomb? And who was the guy who died, who had sand in his whole body, rising up through his mouth and around him? Use quotes to support your response! ;)

I think they're trying to find a curse I think.... I can't exactly recall it being like that but now that you've said it, I believe it.

According to an old poem written Galileo's Diagrama they were searching for an underground annex tomb built by Raphael Santi. The underground tomb that is present in the Chigi Chapel is an alter of one of the then supposed element of science--the earth. The man who had sand in his mouth was one of the four preferettis of the papal election.1