Keywords: Road from Plateau down to Bull Creek and Cow Creek in Missouri River Breaks-112).JPG en Road from Plateau down to Bull Creek and Cow Creek in Missouri River Breaks The large sandstone butte in the center of the photo is an erosional remnant That is the rest of the valley eroded away leaving it as an isolated reminder of a solid sandstone layer that once lay in this area own Montana Geographical Society 2009-11-22 none Upper Missouri River Breaks National Monument Mountains of Montana Cc-zero |