Butte, Montana is home to many things: hundreds of traditions, scores of historical stories, and the wop chop. But Butte's famous, yet underrated, landmark has been ranked in the Top 5 in the U.S. for its category. I bet you can't guess what it is...
These 5 manmade holes have proven themselves to be testaments to the human will and skill of engineering, all in all making up over 10 miles of deep excavation. Lucky for us here in the United States, Montana and Utah feature two entries on the list—and you may not expect them.