Dolliver Memorial Bluff Trail is a standout hiking destination in Lehigh, IA, covering 4.5 miles with 400ft of elevation change. Stats: 4.5 miles, 400ft gain, Moderate. Type: Loop. Surface: Rocky. Time: 2 hours. Fee: $6/vehicle. Dogs: Yes, on leash. Permit: No. Wildlife: deer, herons, kingfishers. Best seasons: Des Moines River bluffs with prairie plants. Pack water, layers, and appropriate footwear. Conditions vary across IA. Leave No Trace: stay on trail, pack out all waste, respect wildlife.