A video of the Chisos Mountains in Big Bend National Park, Texas from my Phantom III Drone. Shot in October 2015. The Chisos Mountains are roughly 30 million years old and the geology is described well here. The mountains are entirely in Big Bend National Park, Texas. Big Bend is the only place in North America where the Appalachia Mountains meet the Rocky Mountains. The music in the video is “The Good, The Bad, and the Ugly” theme song.