The tunnel was a project that was planned in the 1850s to connect SC to the Midwest with a direct rail line. Unfortunately, work on the project was abandoned during the War Between the States due to the lack of funds. 1300 feet of the tunnel is open to the public. The park area features the Issaqueena Falls, picnic areas and a hiking trail. Open daily 10am - 5pm. Dogs should be on leashes. Closed on Christmas day. The tunnel is located 6.9 miles north of Walhalla on SC Hwy 28.