Wen Xu

Expedition leader, Core of the Summit mission

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Last updated May 25, 2026

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China-Nepal team drills first full-depth ice core from Everest summit

New Capabilities

As of May 2026: Returned from summit; transporting samples to laboratories

For nearly three decades, Everest's ice-core record stopped at 6,500 meters on the East Rongbuk Glacier. A joint China-Nepal team has now pulled a full-depth core from the 8,848.86-meter summit.

Updated May 25