In this video, I show you what's inside Petra, also known as the Lost City of Stone, is made up of massive structures that are sculpted right out of the side of canyon walls, hidden in the remote mountains of Jordan, and is one of the most underrated sites of lost ancient human civilization. And when I say that these structures are massive, just compare the size of the doorways to people as you can see here at some of the famous sites within Petra.