Here’s your chance to see something truly rare in the Lower 48: woodland caribou, the most endangered mammal in the contiguous United States. Idaho’s 42,000-acre Salmo-Priest Wilderness, just two hours from Coeur D’Alene, harbors the last 32 of these animals. The tiny Selkirk herd is a remnant from an era when caribou ranged the northern U.S. from coast to coast. After the snow melts (July) and before it dumps again (October) is the perfect time to get a glimpse of the caribou. And the best way to see them is on this 16- to 32-mile traverse.