Historical Marker
Ross' Hole
Historical marker location:
7039 U.S. Highway 93, Sula, Montana
( Marker is on U.S. 93 near East Fork Road (State Highway 472), on the left when traveling north.)
The town of Philipsburg, Montana, is known for its sapphire mining, with some of the best sapphires in the world being found in the surrounding mountains. Visitors can go gemstone hunting and visit the local sapphire museum to learn about the history of mining in the area.