Book excerpt: Home to more than 120 alpine plant species, three of which are found nowhere else in the world, Mount Rainier remains a refuge for a diversity of flora and fauna. It is also a magnet for the hundreds of thousands of people who live within sight of its snowy slopes and for millions of visitors who arrive from around the world each year. O'Hara and McNulty explore the conflict this presents as park managers attempt to balance protection of the mountain's fragile ecosystems with the desires of the many who wish to seek solitude in its vast forests or challenge themselves on its daunting glaciers.