YELLOWSTONE NATIONAL PARK, Wyo. (AP) — Winter is on schedule in Yellowstone National Park.

The park opens to the public for the winter season at 7 a.m. Saturday.

Visitors will be able to travel to the park's interior roads on commercially guided snowmobiles or snowcoaches from the North, West and South Entrances. Travel through the park's East Entrance over Sylvan Pass is scheduled to begin Dec. 22.

The road from the park's North Entrance at Gardiner, Mont., through Mammoth Hot Springs and on to Cooke City, Mont., outside the park's Northeast Entrance is open to wheeled vehicle travel all year.