Plant identification hike, 9 a.m. Saturday.
Geology walk, 9 a.m. Saturday. Meet at Los Trancos lot (from PCH, turn inland at Los Trancos stoplight).
LAGUNA COAST WILDERNESS PARK
Laguna Coast Wilderness Park, 20101 Laguna Canyon Road; reservations and information, (949) 923-2235; www.ocparks.com.
Rangers staff the park daily. Open daily, 7 a.m. to sunset, including holidays. Parking lot hours: 8 a.m. to 4 p.m.
Willow Canyon on Laguna Canyon Road, just south of the El Toro Road intersection. Open to hikers, equestrians and mountain bikers on specified trails; open 7 a.m. to sunset, but parking lot is only open 8 a.m. to 4 p.m., $3.
Dilley Preserve on Laguna Canyon Road is closed indefinitely due to road construction.
Laguna Heights, the trailhead for West Ridge trail and routes into Aliso and Wood Canyons Wilderness Park, at Top of the World on Alta Laguna Blvd., is open daily, 7 a.m. to sunset.
Laguna Greenbelt Inc. leads a hike at 8 a.m. Saturdays. Information: (949) 923-2235. All programs meet at Willow Canyon.
Autumn Comes to the Canyon with Penny Lewis and Annie Stoeckman, 8 a.m. Saturday.
Wilderness Restoration Project; volunteers help with projects and receive free t-shirts, 8 to 11 a.m. Saturday.
Wilderness Action Volunteer Training; learn what's involved in becoming a volunteer, 8 to 11 a.m. Saturday.
The Nature Conservancy leads a full schedule of hikes, mountain bike tours and equestrian rides within Laguna Coast Wilderness Park and the Irvine Ranch Land Reserve. Information: (714) 832-7478.
ALISO AND WOOD CANYONS
Aliso and Wood Canyons Wilderness Park, 28373 Alicia Parkway, Laguna Niguel; (949) 923-2200; www.ocparks.com: Open daily all year, 7 a.m. to sunset, for hikers, mountain bikers and equestrians; parking, $3.
Orange County rangers and a groundskeeper staff the park daily; free 30-minute ranger-led Discovery Hike offered each second and fourth Saturday at noon. Orange County Natural History Museum located at the park entrance; call before visiting to confirm museum is open. (949) 831-3287.