The mountaineer, identified as Alex Chiu, 41, by the National Park Service, died after falling 3,000 feet from Denali’s West Buttress route onto Peters Glacier, an exposed face of rock and seracs.

Alex Chiu, 41, was climbing the West Buttress of Mount McKinley, formerly Denali, 'un-roped' with two others on Monday when he fell to his death from Squirrel Point ...

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.

Climbers watched as Alex Chiu, 41, fell 3,000 feet to his death on Mount McKinley in Denali National Park. His body was recovered as weather cleared.