Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park. Find more at natgeo ...

In summer, the elk have returned to higher elevation habitats. It is forbidden for people to set foot on the refuge at any time of year without a special permit (hunting or fishing), but you can ...

A rarity for the National Park Service ... was this herd of elk, locked up, having massive die outs. We had severe water pollution, some of the worst water pollution in California.” ...

Located in the northern part of California, it's a bit of a trek from San Francisco (about seven hours), Los Angeles (12 ...