For this walk, led by Jeff Pengel, a Certified Interpretive Guide and Maine Master Naturalist, the focus will be on mosses and lichens, examining the subtle and often amazing features of these abundant but usually unnoticed organisms. Bring a hand lens if you have one; we’ll have some you can borrow. Cameras welcome. Be sure to wear comfortable walking/hiking foot gear.

Meet at the Visitor Center.

$5 members, $7 nonmembers

Encompassing almost 1,600 acres in Maine’s Hundred Mile Wilderness region, Borestone Mountain Audubon Sanctuary offers a spectacular array of natural features, including rare older forest, three crystalline ponds, exposed granite crags, and sweeping, panoramic views. Hiking trails lead to the summit and other viewpoints, and a seasonal Visitor Center includes displays and a small Nature Store. The entrance gate is just off Bodfish Valley Road, Elliotsville, and the Visitor Center is a 1.3-mile walk up the access road.