Big Spring to Current River is a standout hiking destination in Van Buren, MO, covering 4.0 miles with 300ft of elevation change. Stats: 4.0 miles, 300ft gain, Moderate. Type: Out-and-Back. Surface: Rocky. Time: 2 hours. Fee: $5/vehicle. Dogs: Yes, on leash. Permit: No. Wildlife: deer, herons, otters. Best seasons: Largest single-outlet spring in the US. Pack water, layers, and appropriate footwear. Conditions vary across MO. Leave No Trace: stay on trail, pack out all waste, respect wildlife.