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YELLOWSTONE NATIONAL PARK -- Changing snow conditions on Sylvan Pass changed again over the weekend, leading park officials to open the East Entrance road from sunset to mid-morning. Dan Hottle, a ...

CHEYENNE - The National Park Service has formally approved an agreement it reached with Wyoming and other parties to use explosives to keep a mountain pass open to guided snowmobile access on the ...

Wyoming brought out its firepower Monday against a proposal to shut down Sylvan Pass in Yellowstone National Park during the winter. State legislators, congressional representatives, county ...

BILLINGS, Mont. - Yellowstone National Park officials said Thursday that making Sylvan Pass safe for avalanche crews could cost almost $4 million - money the park doesn't have. The Wyoming pass marks ...

CODY, Wyo. - With time running out before a final decision is made on winter use in Yellowstone National Park, state and federal officials continue to spar over the costs and risks of keeping Sylvan ...

JACKSON, Wyo. (AP) — An unknown number of dud artillery rounds litter the slopes above a remote pass inside Yellowstone National Park, but there are no plans to find and safely detonate them or stop ...

CODY, Wyo. - A revised winter-use plan for Yellowstone National Park would allow snowmobiles and snowcoaches to cross Sylvan Pass near the park's East Entrance next winter but not after that. A draft ...