Mill Canyon is a valley located in Caribou County, Idaho. It appears on the Upper Valley USGS 7.5-minute topographic quadrangle. The nearest populated place is Old Williamsburg (historical), approximately 9.4 miles to the N.
Caribou County · Idaho
Mill Canyon is a valley located in Caribou County, Idaho. It appears on the Upper Valley USGS 7.5-minute topographic quadrangle. The nearest populated place is Old Williamsburg (historical), approximately 9.4 miles to the N.