The Pioneer Tree Trail follows a redwood-lined tributary of Lagunitas Creek into a mixed Douglas fir, oak, laurel, and madrone forest. The trail is highlighted by the eponymous Pioneer Tree, one of the last old growth redwoods in this second generation forest.

Most redwoods in Sam P Taylor are second generation trees that sprung from roots of logged trees

The Pioneer Tree has been hollowed out by fire, enough that several people can stand inside

The Pioneer Tree Trail follows this tributary into a busy redwood grove

Redwoods form canopy roots that take in moisture from the air

Despite little sunlight, the redwood-fir forest floor is dotted with scores of wildflowers

30-40% of redwoods' water is drawn from fog and moist air

Redwoods have a surprisingly shallow root system, making them susceptible to falling in high winds, or under their own weight

Lagunitas Creek is the scene of annual coho salmon and streelhead trout spawning runs

This madrone is part of a more diverse forest above the creek

Mature redwoods produce cones that open in autumn, releasing 100,000+ seeds that may weigh less than one pound