Meet the Inverness Irregulars for a hike at 9:30 a.m. on Tuesdays at the White House Pool parking lot. The trail will be decided on the spot.

Spend the day hiking through diverse ecosystems or simply enjoying a peaceful picnic in nature at the Martin Griffin Preserve. Your visit is self-guided and entirely your own. Drop in anytime between 9:30 a.m. and 4 p.m. Gate closes at 3:30 p.m.

Meet the Inverness Irregulars for a hike at 9:30 a.m. on Tuesdays at the White House Pool parking lot. The trail will be decided on the spot.

SPAWN and the Tomales Bay Foundation have installed 4,400 locally native plants in the new wetland enhancement project at Chicken Ranch Beach. Join us to care for the plants by weeding and watering while we await our opportunity to complete the planting.

Join Bay Nature and Professor Daniel Fernandez for a virtual talk about summer fog

Help restore critical dune habitat with National Park Service (NPS) rangers and Point Reyes National Seashore Association (PRNSA) staff!

Join Marin County Parks in restoring the unique ecosystem of Bolinas Lagoon and learning how to protect this oasis by identifying and removing invasive species that threaten it.

Join SPAWN at their native plant nursery to learn about native plants and how to care for them.

Join Park Rangers and volunteers in celebrating National Lighthouse Day at the Point Reyes Lighthouse

Meet the Inverness Irregulars for a hike at 9:30 a.m. on Tuesdays at the White House Pool parking lot. The trail will be decided on the spot.

Apply by August 14, 2026 to volunteer in leading school groups on environmental field trips of Martin Griffin Preserve in West Marin. Field trips occur in fall and spring. Training begins in the fall.

SPAWN and the Tomales Bay Foundation have installed 4,400 locally native plants in the new wetland enhancement project at Chicken Ranch Beach. Join us to care for the plants by weeding and watering while we await our opportunity to complete the planting.

Join Marin County Parks in restoring the unique ecosystem of Bolinas Lagoon and learning how to protect this oasis by identifying and removing invasive species that threaten it.

Meet the Inverness Irregulars for a hike at 9:30 a.m. on Tuesdays at the White House Pool parking lot. The trail will be decided on the spot.

Help restore critical dune habitat with National Park Service (NPS) rangers and Point Reyes National Seashore Association (PRNSA) staff!

Join SPAWN at their native plant nursery to learn about native plants and how to care for them.

Join Audubon Society’s Rusty Scalp to bird at Abbotts Lagoon.

Meet the Inverness Irregulars for a hike at 9:30 a.m. on Tuesdays at the White House Pool parking lot. The trail will be decided on the spot.

Join Bay Nature and Julie Woodruff for a virtual talk about Saw-whet Owls

SPAWN and the Tomales Bay Foundation have installed 4,400 locally native plants in the new wetland enhancement project at Chicken Ranch Beach. Join us to care for the plants by weeding and watering while we await our opportunity to complete the planting.

Point Reyes National Seashore invites you to the 2026 Sand Sculpture Contest at Drakes Beach.

Join PRNSA for a member full moon hike.

Join expert tracker Richard Vacha on a nature walk to explore animal behavior. Free.

Meet the Inverness Irregulars for a hike at 9:30 a.m. on Tuesdays at the White House Pool parking lot. The trail will be decided on the spot.

Help restore critical dune habitat with National Park Service (NPS) rangers and Point Reyes National Seashore Association (PRNSA) staff!

Join SPAWN at their native plant nursery to learn about native plants and how to care for them.

Meet the Inverness Irregulars for a hike at 9:30 a.m. on Tuesdays at the White House Pool parking lot. The trail will be decided on the spot.

Join Audubon Society for a day of seabird and marine mammal watching as they head out to the Farallon Islands and offshore waters aboard Captain Christian’s power catamaran, Outer Limits.