Great Hollow and the Friends of the Great Swamp (FRoGS) are co-leading a guided winter hike through Great Hollow Nature Preserve and the neighboring Michael Ciaiola Conservation Area. Join us for a fun and educational hike to learn about local flora and fauna that can be observed in winter. The hike will be moderately difficult. Please wear appropriate foot gear, as parts may be slippery. We will meet at the Great Hollow Nature Preserve visitor’s parking area at 10am. Registration in advance is preferred. Please email John at to sign up.