being a geology major and having required summer field camps got me pretty good with compasses, triangulation, and navigation. in the san juan mountains and the mountains of northern new mexico we would be thrown into 20+ square miles of public land with unmarked, blank topo maps that we had to turn into a finalized geologic map of the area over the course of 3-4 days with nothing but a 700 dollar geologic Brunton, boots, a field notebook, some hydrochloric acid, a 10x hand lense, and a pack of colored pencils along with food and water for the day. boy those were fun days.
barely touched one since. but i keep one in my pack.
in many places in the mountains here in colorado all you need to do is hike down drainage and you'll hit a road in less than five miles if you're seriously hopelessly lost.