California Trails

Yosemite's Staff Geologist Shares his Top 5 Park Destinations

Where to go for the most interesting natural features, from glaciers to rock dikes

Yosemite’s staff geologist, Greg Stock, spends most of his workdays studying and trying to prevent rockfall in the park. On his off days, he hikes and climbs–particularly to these top five favorite spots. Among them: Lyell Glacier, Snake Dike on Half Dome, and Glacier Point.