OverviewLassen Peak. It is bordered on the west by Mills Creek and on the east by rolling forests and marshy meadows. This smooth topped massif was part of ancient Mt. Tehama a much larger and higher volcano than Lassen Peak. Mt. Tehama continued to expand over 200,000 years to a height of 11,500' and a base 11 miles wide. To give you some perspective, Lassen Peak is roughly 3.5 miles wide at base and Mt. Shasta 13 to 14 miles wide. Brokeoff Mtn., Mt. Diller, Pilot Pinnacle and Eagle Peak to the west are also composite remnants of that ancient giant.
This is an easy walk up hike that can be done in a few hours from 2 roadside trailheads with camping. There are fine views of Lassen Peak and the lesser peaks around it to the north and west. To the south is Mt. Harkness and a sweeping view of Lake Almanor. To the west across Sacramento Valley the Yolla Bolly Mountains of the Coast Range rise in the distance.
Crumbaugh Lake trail, north side approach Class 1: From Interstate 5 in Redding go east 46 miles on Hwy. 44 to Hwy. 89. Turn right into the park on 89 and drive 17 miles around Lassen Peak to Kings Creek Campground trailhead (7,300'). Take the Crumbaugh Lake trail (same as Cold Boiling Springs trail) 2 miles to the same saddle and take the north ridge.