I have been reading about Hamish MacInnes since seeing your post. What a legend ... it seems that the greatest challenges for him came towards the end of his life.

This link has a little film called Final Ascent embedded in it - which I found very moving.
https://gripped.com/profiles/legendary-climber-dr-hamish-macinnes-dies/#:~:text=In%201975%2C%20MacInnes%20was%20deputy,being%20caught%20in%20an%20avalanche.