YOSEMITE NATIONAL PARK, Calif. — One person was killed Wednesday and another injured in a rock fall on the granite face of El Capitan in Yosemite National Park, an official said.

Rocks came crashing down at the height of climbing season with at least 30 climbers on the wall, ranger Scott Gediman said.

‘‘It was witnessed by a lot of people,’’ he said.

El Capitan is one of the world’s largest granite monoliths, towering vertically 4,000 feet from the Yosemite Valley floor.

Several people made emergency calls, reporting the rock fall from the Waterfall route on the east buttress of El Capitan.

Officials didn’t say how large the rock fall was, but climbers posted pictures on social media from hundreds of feet up the wall showing a large billow of white dust moments after the crash.

associated press