A 23-year-old cartographer is working on a detailed wall map of Saskatchewan. Alex McPhee, a professional cartographer based in Grasslands National Park, is developing a detailed reference map of the province to follow his award-winning map of Alberta. He's already invested more than 500 hours into the project, and hopes to publish it this summer. McPhee joins John to tell us how a map gets made, how he got started in cartography, and why it's still an important field in the era of GPS and Google Maps.