There's a tomb in Petra

 

Petra is the famous city of stone in Jordan. It's been in movies (notably, as the article below reiterates, Indiana Jones and the Last Crusade), and numerous scenic pictures. 

Inside the most famous of the buildings (?) in Petra, called the Treasury, archaeologists found a tomb. I don't think that they were expecting that, even though there are other tombs around.

‘Stunning’ hidden tomb found at Petra site featured in ‘Indiana Jones’

Underneath the Treasury in Petra, Jordan, archaeologists found remains and a ceramic vessel some said looked similar to the “Holy Grail” depicted in “Indiana Jones.”

OK, they must have been important to be buried there. Who were they?

In general, they know.  But who the individuals buried in the Treasury were, not so much.

"But many questions about the Nabataeans and their city still remain. “There is so much that we have yet to learn about the Treasury, said Creasman in the Warner Bros. news release. One major remaining unanswered question: “When was this remarkable structure built, and why?”

I know, why? 

A view of the Treasury: