Devils Thumb is a cliff located in Boulder County, Colorado. It appears on the East Portal USGS 7.5-minute topographic quadrangle. The nearest populated place is Corona (historical), approximately 3.0 miles to the S.
Boulder County · Colorado
Devils Thumb is a cliff located in Boulder County, Colorado. It appears on the East Portal USGS 7.5-minute topographic quadrangle. The nearest populated place is Corona (historical), approximately 3.0 miles to the S.