Poland's Andrzej Bargiel has become the first climber to ski down the world's highest mountain without supplemental oxygen, his team and expedition organizer said Thursday.

Bargiel glided down Mount Everest's snowy slopes after reaching the summit of the 8,849-meter (29,032-foot) mountain on Monday.

"I am on top of the highest mountain in the world and I'm going to descend it on skis," Bargiel said in a video posted on Instagram early on Thursday.

Bargiel posted another video of the descent on Instagram. "Thank you all for keeping your fingers crossed!" he wrote. "Thank you also to my entire team for being with me throughout this project."

Everest has seen a handful of ski descents but never a continuous downhill without additional oxygen.

In 2000, Slovenian Davorin Karnicar made

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