Overview
The Brown Mountain Trail in Winema National Forest crosses one of the youngest lava flows in southern Oregon, a basalt field that erupted approximately 9,000 years ago and created a landscape still rough-edged and stark. The trail winds through this volcanic terrain with Mount McLoughlin's cone, itself a young volcano, rising above the lava fields as a constant landmark.
Walking on the lava is a fundamentally different experience from forest trail hiking: the rock is jagged, unstable in places, and physically demanding underfoot. The young age of the flow means the forest reclamation is still in early stages, with trees growing through cracks and pockets of soil accumulated over millennia. The contrast between the living forest and the dead lava rock is striking throughout.
The Route
The trail begins at Highway 140 and immediately enters the lava field, following cairns across the rough surface. The route stays on or near the lava flow for much of its length before entering forest sections on the approach to the turnaround viewpoint. The return follows the same route back across the lava.
What to Expect
Stiff-soled boots with ankle support are strongly recommended. The jagged basalt is rough on soft footwear and slippery in wet conditions. No water is available on the route; carry all you need. The lava can be hot on summer days from radiating heat. The highway trailhead has good cell service but coverage drops quickly on the trail.
Nearby
The Alta Lake Trail provides a forested lake alternative nearby. Mount McLoughlin, visible from the trail, is the highest peak in the southern Oregon Cascades and can be climbed from a trailhead off Highway 140. Lake of the Woods Resort is about 10 miles west on the highway.
Leave No Trace
This trail receives enough use that following Leave No Trace principles is important for preserving the experience for future visitors. Stay on the marked trail to prevent erosion. Pack out all waste. Avoid camping within 200 feet of water sources or the trail. Use existing fire rings only where campfires are permitted, and check current fire restrictions at checking conditions before you go before any visit. The trail and surrounding terrain remain in good condition because previous visitors have respected these norms.
Safety Considerations
The moderate rating reflects the trail's general character under typical conditions. Weather, seasonal snow, and trail conditions can change the experience significantly. Carry the 10 Essentials on any full-day outing. Inform someone of your plans and expected return time before heading out, particularly on longer or more remote trails. Cell service varies throughout Winema National Forest and may be unreliable in canyon bottoms or remote terrain.