Anyone who has ever returned from of a summit attempt on a very high mountain – whether successful or not – , knows how German climber Billi Bierling is feeling now. All energy is used up, the adrenaline too – and the exertions of recent days are taking their toll. It takes a while before you revive. Of course, a summit success helps. Not only Billi – as reported – can be pleased about having been on top of Cho Oyu. Her team mate Susanne Mueller Zantop also reached the 8,188-meter-high summit, unlike Billi with bottled oxygen. The 60-year-old thus became the oldest German woman so far who has been on top of Cho Oyu, the sixth highest mountain in the world. For Billi Bierling it was already her fifth summit success on an eight-thousander. Despite of her tiredness, the 49-year-old has answered my questions.

Billi, you have climbed Cho Oyu without bottled oxygen. How did you feel on your ascent?

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