Our mountaineering expert looks into the death zone and the reasons why climbing 8,000-meter peaks can be so dangerous ...

Walter Nones has died on Cho Oyu (8201m), the sixth highest mountain in the world ... found themselves in difficulty. On that day he reached the summit along with Mondinelli, Unterkircher, Compagnoni ...

With Jost Kobusch making his third attempt this season, it is a good time to look back at Everest's winter climbing history.

After hours: November 29 at 4:50 PM EST Loading Chart for SMMT ...

After hours: November 27 at 7:18 PM EST Loading Chart for SUM ...