Lassen Volcanic National Park

Snag Lake Loop

moderate Solitude SeekersExperienced HikersPhotographers
13 mi Distance
Varies Estimated Time
loop Trail Type

What to Expect

The Snag Lake Loop is a full-day commitment through some of Lassen's most remote and least-visited backcountry. You'll wind through a landscape still wearing the scars of the 2021 Dixie Fire — standing snags, blackened trunks, and the eerie beauty of a forest in recovery. The trail is largely sun-exposed now, which means you'll feel every degree of that volcanic plateau heat in summer. The loop skirts Snag Lake itself, one of the park's larger backcountry lakes formed by ancient lava flows, and threads through meadows, pumice flats, and recovering forest. Be warned: the Grassy Creek footbridge is partially collapsed, so you'll need to navigate a crossing that ranges from ankle-deep nuisance to genuine obstacle depending on snowmelt. This is a trail for experienced hikers who find post-fire landscapes fascinating rather than depressing, and who want thirteen miles of near-solitude.
Solitude SeekersExperienced HikersPhotographersBackcountry ExplorersPost-Fire Ecology

Safety Advisory

The Grassy Creek footbridge is partially missing. In early season or high snowmelt years, this crossing can be thigh-deep and swift. Trekking poles and water shoes are strongly recommended, and if the water looks too high, turn back rather than risk it.

Post-fire hazards are real along this route — weakened trees can fall without warning, especially on windy days. Stay alert for leaning snags and avoid camping or resting directly under dead standing timber.

The trail is almost entirely exposed with minimal shade. Heat exhaustion is a genuine risk on warm days. Start early, wear sun protection, and know the signs of overheating.

Trail Details

Distance 13 miles round-trip
Difficulty moderate
Estimated Time Varies
Trail Type loop
Pets Not allowed
Season Year-round
Trailhead Snag Lake Loop

Pro Tips

Trail Tip

Start at Butte Lake trailhead for the most logical loop direction — you'll hit Grassy Creek earlier in the day when water levels are typically lower, especially in late summer when afternoon snowmelt peaks have subsided.

Trail Tip

Carry at least three liters of water and a filter. The exposed, post-fire terrain offers almost no shade for the middle third of the loop, and the few water sources you'll pass need treatment. There are no reliable refill points between Snag Lake and the return leg.

Trail Tip

The Dixie Fire recovery zone is a photographer's dream in the right light — early morning side-light through standing snags creates dramatic compositions. The south shore of Snag Lake at golden hour, with Lassen Peak in the distance behind burned timber, is the shot worth chasing.

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