Cleman Mountain Professional Review and Guide
"Cleman Mountain, a 15-mile-long ridge formed of Columbia Basin lava flows more than 10 million years ago, was named in 1868 for settler Augustan Cleman. It rises to an elevation of nearly 5,000 feet, some 3,000 feet above Naches and Nile valleys (to the west) and Wenas Valley (to the east).
On a clear day it provides grand vistas from the forested Cascades, including Mt. Rainier and Mt. Adams, to the rolling, semiarid Columbia Basin. On roads that range from graded dirt and gravel to rough, loose rock. High ground clearance will be required."