This story appears in the May 2006 issue of National Geographic magazine ... along with a half million caribou, hundreds of grizzlies, wolves, and in summer more waterfowl, raptors, and shorebirds ...

Vuntut National Park may be one of the most remote and least visited national parks in Canada, but it’s far from unpopulated. Vuntut is the domain of the Porcupine caribou herd and half a ...

During the end of the last Ice Age, caribou are known to have similarly migrated along a still-frigid land bridge that is now submerged beneath Lake Huron.(Paul Nicklen/National Geographic ...