Bradly J. Boner | Photography

Weird geological upheaval at Bull Moose Ranch in the Gros Ventre Range

Andy Camp rides along a ridgeline near his ranch near the Upper Gros Vente River in mid-June. Camp, who has been a hunting outfitter and guide in the area, said he's seen the hillside rise and bulge about 100 feet during the last several years, and vegetation has slowly died away from supposed thermal activity.

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Andy Camp rides along a ridgeline near his ranch near the Upper Gros Vente River in mid-June. Camp, who has been a hunting outfitter and guide in the area, said he's seen the hillside rise and bulge about 100 feet during the last several years, and vegetation has slowly died away from supposed thermal activity.