‘Holy Grail’ Cup and Hidden Tomb Uncovered at Ancient Wonder Newsweek‘Stunning’ hidden tomb found at Petra site featured in ‘Indiana Jones’ The Washington PostFIRST LOOK: Josh Gates Explores Historic Finds at Petra, One of the New Seven Wonders of the World, in New Season of Expedition Unknown Premiering Wednesday, October 9 at 9PM ET/PT on Discovery Channel Warner Bros. Discovery