9 Rare Photos Taken During The Eisenhower Tunnel Construction That Will Simply Astound You

If you have ever driven through the mountains along I-70, you are almost guaranteed to have passed through the record-breaking Eisenhower Tunnel… but have you ever wondered what the area looked like before its construction? Or what it took to construct such an incredible piece of architecture? Wonder no more, as we have uncovered these nine rare photos taken during the construction of the Eisenhower Tunnel (courtesy of our friends at History Colorado):

Discover even more drive-able tunnels by clicking 6 Awesome Tunnels In Colorado You Need To Drive Through At Least Once.