Wilderness · Oregon
Three Sisters Wilderness
A skyline of volcanoes, lava & alpine lakes
TypeWilderness
StateOregon
Best seasonMid-summer through fall
Don’t missGreen Lakes basin
A volcanic wonderland in the Oregon Cascades where three matching peaks tower over obsidian lava flows, hanging glaciers, and meadows of alpine lakes. Green Lakes and the Obsidian Trail are bucket-list day hikes.
What to see
- Green Lakes
- Obsidian Trail
- South Sister summit
- Proxy Falls
- Pacific Crest Trail
On public wild lands, services are sparse and conditions change fast — check the managing agency (Forest Service / BLM / Park Service) for road and seasonal closures, fire restrictions, and any permits before you go, and pack out what you pack in.
Build a trip around wild places like this.
Roamward turns spots like this into a real road trip on your phone — the scenic drive, the stops, and the detours, planned around the vibe you’re after. Get early access: