Hitting Yellowstone National Park this weekend? Here's a look at what's open and what's not, as the first big weekend of the 2010 summer season is upon us.

Second: the Beartooth Pass Highway will indeed open Saturday, and a ceremony is planned Saturday in Red Lodge. You can see the details here. We'd expect some big crowds in Cooke City over the weekend as well: the snow is mostly gone and the 

Despite what you'd think, not every service or facility is open yet for the season. Here's a look at each area and what's actually open.

Canyon Village: The Canyon service station and General Store are open. Other facilities -- the Lodge, Dining Room, Gift Shop, Cafeteria and Campground -- do not open until June 4.

Fishing Bridge: All facilities are open.

Grant Village: Lodging, service-station, Grant Village Dining Room and store facilities are open. The Lake House Restaurant does not open until June 18, and the Grant Village Campground doesn't open until June 21.

Lake: All facilities and restaurants at the Lake Yellowstone Hotel are open. The Lake General Store does not open until June 4, while the Lake Lodge facilities (cabin and cafeteria) open June 10.

Mammoth: All facilities, including stores and the riding corral, are open.

Old Faithful: All facilities, including lodging, stores, restaurants and service stations, are open.

Tower/Roosevelt: The Tower General Store is open. The Tower Junction Service Station opens June 4. The Roosevelt Lodge opens June 11.

Finally: all the visitor centers will be open; most opened Wednesday.

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