Mawson and the Ice Men of the Heroic Age: Scott, Amundsen and Shackleton
Douglas Mawson was an Australian geologist who went on an early Antarctic expedition (that Shackleton was also on). He was part of the team that first made it to the magnetic pole.
He returned on second expedition that had multiple teams including the aim of reaching the magnetic pole again to map how far it had moved. He was actually in the Antarctic this time at the same time as Amundsen and Scott.
Then drama happened.
No spoilers, but Sir Edmund Hillary was being hailed as the 'Greatest Explorer' for conquering Everest, he demurred and said "No. Douglas Mawson is the Greatest Explorer of our age."
I had just finished Mawson and the Icemen.
https://www.amazon.com/Mawson-Heroic-Scott-Shackleton-Amundsen-ebook/dp/B005TD2OPC