TODAY

Hidden Valley walk

11 a.m. to 3 p.m., Jefferson

Hidden Valley Nature Center is holding an open house to show off its trails, huts and bog walk in conjunction with the Great Maine Outdoor Weekend. Hidden Valley director Gary Hayward will lead a walk through the working forest, while Maine Master Naturalists give lessons on tree identification. Kids activities are also planned. No cost. Call 586-5837, or go to www.hvnc.org.

TUESDAY

Pemaquid Paddlers

9 a.m. in Damariscotta

This week’s destination for the Pemaquid Paddlers is Damariscotta Lake. Take Route 1 from Damariscotta to Vannah Road and go 1.1 miles to the put-in, located just past the railroad tracks. Park along the side of the road. The ramp is near the center of the causeway. Participants must provide their own canoe or kayak and wear a life jacket. Call 677-6380.

WEDNESDAY

‘Storms of Denali’ talk

7 p.m. in Portland

The Maine Outdoor Adventure Club’s monthly meeting will feature hiker and author Nicholas O’Connell, who will discuss his recent book about Denali. O’Connell’s first novel, “The Storms of Denali: The Nature of Risk in Life and in Climbing,” covers the dangers inherent in high-altitude ascents. The meeting will be at the Allen Avenue Unitarian Universalist Church. No cost. All welcome. To learn more, email programs@moac.org.

Wednesday Walkers

10 a.m. to noon in Boothbay

Join the Boothbay Region Land Trust’s Wednesday Walkers for a walk around Zak Preserve. Enjoy the woods and views of the salt marsh. Meet at the trailhead parking lot off Route 27. For more information, call 633-4818.

– Deirdre Fleming