Nearly 400 metres beneath the Labrador Sea, John Geiger watched Sir Ernest Shackleton’s last ship emerge from the darkness. Two years after leading the expedition that discovered Quest, the Royal Canadian Geographical Society CEO returned aboard the research submersible Alvin to see the wreck with his own eyes.

In this episode of Explore: A Canadian Geographic Podcast, Geiger joins host David McGuffin to discuss that extraordinary encounter and his new book, Quest: Shackleton’s Last Ship and the End of the Heroic Age. It reveals a surprising Canadian chapter in Shackleton’s life: his plans to explore Canada’s Arctic, his efforts to secure backing in Ottawa, and his thoughts of making Canada his home.

Geiger takes us inside the rivalry between Shackleton and Canadian-born explorer Vilhjalmur Stefansson, whose competing ambitions divided Ottawa’s political and bureaucratic circles. When Canadian support fell through, Shackleton turned south instead—aboard a ship ill-suited to the Southern Ocean, on the expedition that would become his last.

We also explore Quest’s remarkable working life after Shackleton, the expedition’s visit to Robert Falcon Scott’s last ship, Terra Nova, and how new technology is helping preserve both wrecks digitally. Along the way, Geiger reflects on Shackleton’s exceptional leadership and the power of exploration to bring Canadian history and geography to life.