The single lane Scovel Johnson tunnel on Iron Mountain Road with caution signs and a view of Mount Rushmore in the background.

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Size: 3677px × 5515px
Location: Keystone, South Dakota
Photo credit: © Tami Freed / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: adventure, attraction, black, caution, cloudy, cracks, dakota, discover, drive, engineering, explore, geology, granite, hills, iron, johnson, lane, memorial, mount, mountain, narrow, national, natural, nature, outdoor, quartz, road, rock, rushmore, scovel, signs, single, south, tourism, trees, tunnel, view, yellow