Overview
The Sky Lakes Wilderness covers 116,300 acres of volcanic plateau terrain on the east side of the Cascades, sharing a boundary with Crater Lake National Park in Fremont-Winema National Forest. The wilderness contains over 200 lakes and ponds in glacially and volcanically formed basins, fed by snowmelt from surrounding ridges. The Pacific Crest Trail traverses the wilderness from north to south, providing a long-distance backbone for multi-day routes.
The Cold Springs Trailhead approach reaches the main lake cluster in 4.4 miles, passing through a transition from ponderosa pine to mountain hemlock forest before entering the volcanic lake basin. This is the most popular entry point into the wilderness and one of the more scenic approaches.
The Route
Cold Springs Trailhead to Wilderness Boundary (Mile 0 to 1.5)
The trail climbs immediately through ponderosa pine and transitions to mixed conifer. The wilderness boundary is at about mile 1.5. The trail here is well-maintained and clearly signed.
Wilderness to First Lakes (Mile 1.5 to 3.5)
The trail continues climbing through mountain hemlock and subalpine fir, reaching the first lakes basin at about mile 3.5. Isherwood, Natasha, and Elizabeth Lakes cluster in this section of volcanic depression terrain. The lakes are clear and cold.
Pacific Crest Trail Junction (Mile 3.5 to 4.4)
The trail intersects the Pacific Crest Trail at about mile 3.5 in the main lake basin. Following the PCT north for the final 0.9 miles brings you to additional lakes and a viewpoint toward Crater Lake rim country. The natural turnaround is at the high point above the main basin.
Return via the same route.
When to Hike
July through September is the primary season. Snow clears from the wilderness by late June in most years.
September offers the most reliable weather and the clearest views. The lakes are warm enough for brave swimmers in August.
What to Bring
Many hikers carry 2 liters of water. The wilderness lakes provide water throughout; treat or filter. Individual hydration needs vary.
A fishing license is required for fishing in wilderness lakes. Rainbow trout are present.
Trailhead Access
The Cold Springs Trailhead is on Highway 140 west of Klamath Falls. A Northwest Forest Pass is required for parking (as of 2026). Vault restrooms at the trailhead.
No wilderness entry permit required as of 2026. Dogs allowed on leash.
Nearby
The Fourmile Lake Trail accesses the same wilderness from a different trailhead and is worth comparing for a two-day exploration. The Mountain Lakes Loop accesses a separate wilderness area nearby.
Check current conditions at Checking Conditions Before You Go. Follow Leave No Trace 7 Principles in this volcanic lake ecosystem.