Arts The newest national monument was once a winter combat training site for World War II soldiers 7:47am October 15, 2022 by Leigh Paterson History Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2022 NPR. To see more, visit https://www.npr.org. 300x250 Ad 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate