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Muhammad Ali Sadpara and Intesh climb the peak of the world's second highest mountain range
His death was confirmed by Summit Karakoram, which organised his trip
Besides being technically difficult to climb, weather conditions on the peak are notorious
K2 remains only peak in the world above 8,000 metres never climbed in winter
The climber left behind his team at K2's base camp on Saturday
Why did it take over a day and a half to get helicopters up to Nanga Parbat?
Elisabeth Revol was rescued this week who scaled part of the 26,660 feet Nanga Parbat mountain
The mountaineers were attempting to ascend the treacherous peak in Pakistan’s Himalaya mountain range
Pak Army launch rescue operation to find missing foreign mountaineers at Nanga Parbat: ISPR
It is the only mountain among 8,000m peaks in world yet to be scaled in winter