One Lane Tunnel — photo spot in RGC5+3M, Keystone, SD 57730, USA
One Lane Tunnel
A narrow, historic single-lane tunnel carved through pink granite—great for dramatic framing, leading lines and scale shots with vehicles or hikers. Best light is low sun from east or west; golden hour backlights the tunnel mouth and highlights rock textures. Accessible from Iron Mountain Road/Needles Hwy near Keystone; roadside pullouts and small informal parking exist but space is limited—visit weekdays or early mornings to avoid traffic. No entry fees; watch for passing vehicles and seasonal/
One Lane Tunnel
A narrow, historic single-lane tunnel carved through pink granite—great for dramatic framing, leading lines and scale shots with vehicles or hikers. Best light is low sun from east or west; golden hour backlights the tunnel mouth and highlights rock textures. Accessible from Iron Mountain Road/Needles Hwy near Keystone; roadside pullouts and small informal parking exist but space is limited—visit weekdays or early mornings to avoid traffic. No entry fees; watch for passing vehicles and seasonal/