Purgatory Chasm Trail is a standout hiking destination in Sutton, Massachusetts, covering 1.5 miles with 200ft of elevation change. Stats: 1.5 miles, 200ft gain, Moderate. Type: Loop. Surface: Rock. Time: 1-2 hours. Fee: $5 park fee. Dogs: Yes. Permit: No. Wildlife: deer, wild turkeys, foxes, timber rattlesnakes. Best seasons: Dramatic glacial chasm with boulder scrambling. Pack water, layers, and appropriate footwear. Conditions vary across Massachusetts. Leave No Trace: stay on trail, pack out all waste, respect wildlife.