Who is Nirmal Purja, world-famous mountaineer missing after Karakoram avalanche in Pakistan?

Nirmal Purja is missing after an avalanche struck the Karakoram range while he was leading a group of 10 climbers at Broad Peak.
Purja climbed the world's 14 highest peaks in a record 189 days in 2019, a feat featured in the Netflix documentary '14 Peaks: Nothing is Impossible'.
He was part of the team that made the first successful winter ascent of K2 in 2021.
Purja served 16 years in the British military, including as a Gurkha and with the Royal Marines' Special Boat Squadron.
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