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Live Fire

As a result of the winter avalanche control program, in which old cannons fire artillery at mountainsides to release avalanches before they can come down on unsuspecting snowmobilers and coach riders, an "untold number of dud artillery rounds" are littered across Yellowstone's Sylvan Pass. Thing is, there's no plan to pick 'em all up. It's a little too expensive and a little too difficult. One has reportedly been carried down to the highway, while by one estimate, 300 dud rounds sit in and under the rocks and talus of the pass. Park officials counter that that number is "unrealistic." Still, I guess we know where you won't be hiking this summer! [Jackson Hole News & Guide]