These chapters on different at-risk locations contain more rhapsody than actual travel information. If the authors had included websites and organizations at the end of each chapter, rather than in an index, that would have helped push the travel angle more. Still, I'm far more inspired to see Macchu Picchu before it gets trampled or the wait-listing starts - Casco Bay, Maine, before it gets fished out of existence - and my own neighbor, Mt. Rainier, before violent storms and volcanic explosions wash out all the trails.