Lillian begins her journey in the place that helped inspire the national parks. As wildfires threaten Yosemite’s giant sequoias, she asks what it will take to correct past mistakes and ensure the survival of these ancient trees.

Glacier National Park

The Washington Post’s Lillian Cunningham journeys through the messy past and uncertain future of America’s national parks. In trips through five iconic landscapes, she ventures off the marked trail and beyond the parks’ borders to better understand the most urgent stories playing out in these places today. Along the way, she meets the people fighting to help these parks evolve – and survive.