The Devil’s Chair Trail at Devil’s Punchbowl Natural Area ends at a fenced-in boulder, one of the coolest lookout spots in L.A. County. Prime Desert Woodland Preserve walking trail Distance: 3 miles Elevation gain: Minimal Difficulty: Easy The Prime Desert Woodland Preserve is a 120-acre open space in Lancaster that’s open daily from 6 a.m. to 10 p.m., weather permitting. …