They fitted large industrial pillows, like air bags on a car, behind the suspended loose rocks, and inflated them with ...

Farrington noted that another rock slide closed Highway 120 into Yosemite National Park last year. In fact, many of Yosemite’s spectacular rock features, including Yosemite Valley itself, were carved ...

In a landslide, masses of rock, earth or debris move down a slope. Debris and mud flows are rivers of rock, earth and other debris saturated with water. They develop when water rapidly accumulates ...