Channel Islands National Park

San Miguel Island Caliche Forest Trail

moderateSolitude SeekersWildlife WatchersPhotographers
5 miDistance
400 ftElevation Gain
3-4 hoursEstimated Time
roundtripTrail Type

What to Expect

Getting to this trail is half the adventure — you'll need a boat concession to San Miguel, the most remote island in Channel Islands, and then a ranger must accompany you beyond the ranger station. But the payoff is otherworldly. The Caliche Forest isn't trees at all; it's a ghostly stand of mineral casts left behind when ancient vegetation decomposed, leaving hollow stone pillars that look like something from another planet. The five-mile roundtrip crosses exposed, wind-scoured terrain with gentle elevation changes — nothing brutal, but the relentless island wind will remind you who's in charge. Along the way, you'll pass colonies of elephant seals and sea lions hauled out on the beaches below. This trail rewards the patient and the curious — hikers who treat the journey as the destination and don't need a summit to feel accomplished.
Solitude SeekersWildlife WatchersPhotographersGeology BuffsAdventure Hikers

Safety Advisory

The trail is fully exposed with zero shade and no water sources. The combination of wind, sun reflection off light-colored soil, and the remote setting means dehydration sneaks up fast — carry more water than you think you need for a five-mile hike.

Cliff edges along the coastal sections are unstable and undercut by erosion. Stay on the established trail and well back from bluff edges, especially when winds gust — the sandy soil crumbles without warning.

Trail Details

Distance5 miles round-trip
Elevation Gain400 ft
Difficultymoderate
Estimated Time3-4 hours
Trail Typeroundtrip
PetsNot allowed
SeasonYear-round
TrailheadSan Miguel Island Caliche Forest Trail
Trail Tips
  1. 1

    Book your Island Packers concession boat well in advance — San Miguel trips run only a handful of times per year, and the crossing from Ventura takes about four hours each way, so most visitors do an overnight camping trip to make it worthwhile.

  2. 2

    Layer up with a serious windbreaker even on warm days. San Miguel is the most exposed island in the chain, and sustained winds of 20-30 mph are standard, not exceptional. A buff or neck gaiter keeps sand out of your face.

  3. 3

    Bring binoculars and a telephoto lens — during peak season (late summer through fall) the Point Bennett area at the island's western tip hosts one of the largest pinniped breeding colonies in the world, with up to 30,000 animals across five species visible from the bluffs above.

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