The Longest Tunnel In South Dakota Has A Truly Fascinating Backstory

South Dakota has some of the most unique and must-visit tunnels in the country, thanks – in part – to such innovative passages as the Needles Eye, Hood, and Scovel Johnson Tunnels. In addition to these more one-of-a-kind channels, South Dakota is also home to more traditional structures, like the one along the George S. Mickelson Trail:

For even more of our favorite SoDak trails, check out The 10 Gorgeous Hikes Everyone In South Dakota Must Complete.

Address: George S. Mickelson Trail, Deadwood, SD, USA