Riddle Mountain is a ridge located in Harney County, Oregon. It appears on the Happy Valley USGS 7.5-minute topographic quadrangle. The nearest populated place is Diamond, approximately 10.4 miles to the SW.
Harney County · Oregon
Riddle Mountain is a ridge located in Harney County, Oregon. It appears on the Happy Valley USGS 7.5-minute topographic quadrangle. The nearest populated place is Diamond, approximately 10.4 miles to the SW.