Glacier National Park officials recently announced the 2011 operating dates for Park concessioners. For general park information, visit online at www.nps.gov/glac or call 406-888-7800.

• Belton Chalets, Inc. operates two backcountry chalets. The historic Granite Park Chalet, available for overnight use and as a rustic hiker shelter, will be open from June 28 through Sept. 10. The historic Sperry Chalet, providing traditional overnight accommodations and food service for overnight guests and day hikers with meal reservations, will be open from July 8 through Sept. 11. For more information, call 1-888-345-2649 or visit online at www.sperrychalet.com or www.graniteparkchalet.com.

• Glacier Park Boat Company provides boat tours and rentals. Rentals only at Apgar will run from June 4 through Sept. 5. Boat tours include Lake McDonald , from May 21 through Sept. 24, Many Glacier, from June 17 through Sept. 12, Rising Sun, from June 19 through Sept. 5, and Two Medicine, from June 10 through Sept. 12. For more information, call 406-257-2426 or visit online at www.glacierparkboats.com.

• Glacier Park, Inc. provides front-country lodging, food and beverage services, retail, tour and transportation services. This includes Glacier Park Lodge and the Prince of Wales Hotel, located outside the park; the Hiker Shuttle, connecting the Many Glacier area to the Park’s Going-to-the-Sun Road transit system, which operates July 1 through Sept. 2; and the east-side shuttle service to trailheads and hotels between East Glacier and Waterton, Alberta. Shuttle service to Waterton will end after Sept. 19. For reservations, call 406-892-2525 or visit online at www.glacierparkinc.com.

• Glacier Guides, Inc. provides day hikes and backpacking services from May through October. For more information, call 1-800-521-RAFT or 406-387-5555 or visit online at www.glacierguides.com.

• Sun Tours provides road-based tours from a Blackfeet perspective from May 15 through Oct. 15. For more information, call 1-800-786-9220 or 406-226-9220 or visit online at www.glaciersuntours.com.

• Swan Mountain Outfitters provides horseback rides at Apgar from Apgar from May 21 through Sept. 5, at Lake McDonald from May 21 through Sept. 19, and at Many Glacier from June 17 through Sept. 12. For more information, call 1-877-888-5557 or visit online at www.swanmountainoutfitters.com/glacier.

• Waterton Inter-Nation Shoreline Cruises provides boat tours on Waterton Lake to Goat Haunt Landing from June 4 through Sept. 25. For more information, call 403-859-2362 or visit online at www.watertoncruise.com.

• Privately-owned facilities in Apgar Village offer lodging, dining, camping supplies, groceries and gifts from May through much of September.