Discovery Channel’s popular show “Expedition Unknown” was recently on site to document the discovery of 12 human skeletons and artifacts dating back at least 2,000 years, which had all been long hidden beneath the famed Khazneh (or “Treasury”) in Petra. The colossal find was accomplished by a team lead by archaeologist Pearce Paul Creasman.

“When we spotted what looked like a chalice, all of us just froze,” Gates said. “It looked nearly identical to the Holy Grail featured in 'Indiana Jones and the Last Crusade,' set in the ancient building directly above the tomb. It was the ultimate ...