Boston COVID doctor and Harvard lecturer, 56, dies in fall while climbing one of the world's highest mountains in Pakistan
Dr Alex Goldfarb-Rumyantzev was climbing Pastore Peak near K2 in Karakoram mountains when he went missing on Saturday
His body was discovered on Monday by Pakistani military after apparent fall
Goldfarb and his mountaineering partner were preparing to ascend Broad Peak, world's 12th highest mountain
Goldfarb, a well-respected medical doctor and Harvard lecturer, had volunteered to treat COVID patients from the outset of the pandemic