Mule trains take supplies to the trail crews in Sequoia National Park. Crews spend months in remote regions of the Sierra Nevada maintaining trails.

Jan 23

Written by Charles Wolford

Charles Wolford

Lottery to hike California's tallest peak is very competitive — and is now open Photo of Kellie Hwang

The Science Behind the Oldest Trees on Earth-How experts have determined that bristlecone pines, sequoias and baobabs have stood for thousands of years