The slide came crashing down across both lanes of Highway 140, a scenic winding route along the Merced River between the town of Mariposa and Yosemite’s Arch Rock entrance. “The boulders that ...

They fitted large industrial pillows, like air bags on a car, behind the suspended loose rocks, and inflated them with compressors ... just outside what is now Yosemite’s Arch Rock Entrance.

A massive rockslide closed one of the main entrances into Yosemite National Park, forcing visitors to seek out alternative routes. As of Friday, a 4.5-mile stretch of Highway 140 was closed east ...