Mingma Gyalje Sherpa was friends with Nirmal Purja and Kili Pemba Sherpa, two of the strongest climbers he had ever known. But this July, an avalanche swept through Pakistan's Broad Peak, killing both. Mingma recalls the moment he found their bodies. Tap the link in @BBCNews’s bio to read more. #NimsPurja #NirmalPurja #BBCNews