The BBC joined Canadian military rangers on the final leg of their 5,200km (3,200 miles) Arctic patrol to share the survival skills needed to endure sub-zero temperatures, navigate remote tundra and camp in conditions as cold as -60C (-76F).
But how did reporters on the trail, Nadine Yousif and Eloise Alanna, get their story started?
Video: Eloise Alana
Watch our report on survival in the Arctic here
Read stories about the Canadian Rangers here.
