WATCH: Rescued climber faced 'constant avalanches'

Aware that his tracking device's battery was running out, Russian mountaineer Alexander Gukov sent an SOS and waited, cocooned in snow as Pakistani military rescuers struggled to reach him.

"I've never seen weather like this," he said from his hospital bed. "For seven days, avalanche, avalanche, avalanche."

Gukov's climbing partner died as they attempted the descent in the Karakoram mountains in Pakistan.