Mass Audubon is cosponsoring a spruce-fir boreal forest snowshoe trek and track from 10 a.m. to 1 p.m. Sundays, Jan. 19 and Feb. 9, at Tamarack Hollow Nature and Cultural Center, 1515 and 1516 Savoy Hollow Road.

Snowshoe or hike, depending on the trail conditions, and learn about the unique ecology of the upper elevations of Massachusetts. This moderate trek is approximately 2 miles round-trip.

Snowshoe rentals are available at Tamarack Hollow for $5 per pair. Email aimee@gaiaroots.com to reserve snowshoes and for registration information.