At least one person was killed in one of two rockslides Sunday on El Capitan in Yosemite National Park.
The fatal slide occurred about 9 a.m. on El Capitan, the 3,000-foot granite monolith at Yosemite Valley's north end.
The person killed was apparently climbing the iconic stone.
It was unclear if anyone else was injured.
A second rockslide occurred about two hours later, according to witnesses.
While rockslides are commonplace in the park - one was reported a week ago - slide-related fatalities are not. The last was reported in 1999, when a Colorado climber, Peter Terbush, was killed by falling rocks on the Glacier Point "Apron."
In 1996, a Whittier hiker, Hisano Hamada, was killed when a giant boulder crashed from Glacier Point.
And, three people were killed in 1980 on the Yosemite Fall Trail when thousands of tons of granite came crashing down.