In Montana's Little Belt Mountains is Yogo Creek. Here prospectors searching for gold found some of the most sought after sapphires. The deep blue color of the yogo are unique to this area. At the start of our footage centered in the distance is the famous rock tollgate blasted out of the hills to allow wagons to pass into Yogo Gulch. Filmed using a DJI Phantom 4 Pro and piloted by David Daly