As our ship creeps around the corner past towering granite cliffs streaked with ivory trails of tumbling waterfalls, there’s a collective gasp as we spot a wall of teal-tinged ice blocking our way.
Rising up a dizzying 200ft, roughly hewn and scarred by deeply chiselled crevasses, this is the Garibaldi Glacier, the frozen crown jewel of the Chilean fjords that carves a 10-mile path from the Patagonian ice fields before tumbling at glacial speed into the Beagle Channel.