[brudgers]

Right. It’s kept open in winter because it is the only access to Cooke City.

Wyoming 296 (Chief Joseph Highway) gets closed at the west end of Sunlight Basin.

[ethbr1]

During the winter, I believe there is snowmobile access, either guided or unguided (pass-limited-per-day): https://www.nps.gov/yell/planyourvisit/snowmobiles-snowcoach...