Bass River State Forest Trail is a standout hiking destination in New Gretna, New Jersey, covering 5.5 miles with 40ft of elevation change. Stats: 5.5 miles, 40ft gain, Easy. Type: Loop. Surface: Sand. Time: 2-3 hours. Fee: $10 park fee. Dogs: Yes. Permit: No. Wildlife: deer, foxes, timber rattlesnakes, pine snakes. Best seasons: New Jersey oldest state forest with cedar swamp and lake. Pack water, layers, and appropriate footwear. Conditions vary across New Jersey. Leave No Trace: stay on trail, pack out all waste, respect wildlife.