By the Numbers: Yosemite Rockfall
The stats and science behind the Valley’s constantly exfoliating granite.
Geology
The Science of Rockfall: What We Know—and What We Don’t
Yosemite geologists, with the help of climbers, are inching closer to answering the elusive question: "Why do rocks fall?"
Photo Gallery: The Many Different Types of Rocks
Learn more about the rocks you climb