A concessions company that operates in Acadia National Park, Hawai'i Volcanoes National Park, Mammoth Cave National Park and eight other units of the National Park System says it can take over the concessions operation at Crater Lake National Park in Oregon

Are you ready to test your knowledge and learn more about units in the National Park System? Then take a look at National Parks Quiz And Trivia #27 and see just how much you know (or think you know).

The National Park System is full of superlatives: the biggest, the smallest, the longest, the deepest, the rarest, the tallest, and on and on. National Parks Quiz and Trivia #26 takes a look at some of these superlatives while testing your knowledge and teaching you a little something you might not have known.

Many travelers (readers of the Traveler excepted) mistakenly believe commercial facilities in the national parks – lodging, dining, and retail - are operated by the federal government. While national park officials have ultimate oversight on things such as pricing, these facilities are operated by private companies that bid for the right to rent rooms, operate dining facilities, sell T-shirts, and offer specified activities such as trail rides and guided tours. NPS rangers continue to staff visitor centers and offer interpretive activities, but nearly all commercial activities are handled by the private sector.