Drive north on Feather River Drive from Hwy 36/Main Street Chester, CA. Follow the signs to Juniper Lake about 17 miles I think from town. Half paved and half gravel.
This view is from the hiking trail to Harkness Lookout, almost 2 miles one way from the Juniper Lake area. A stunning view of the eastern flank of Mt. Lassen, some consider it the best view of the park.