National Geographic : 1930 Jul
FEW ANIMALS SWIM SO HIGH OUT OF THE WATER AS THE CARIBOU It takes to the water readily and swims long distances, for its thick coat, with air in and between the hairs, acts somewhat asalife-preserver. The normal cruising speed is about two miles an hour, but on a spurt the animal can go as much as five miles anhour (see, also, text, page 102). Photographs from Amos Burg TENS OF THOUSANDS OF CARIBOU ANNUALLY CROSS THE YUKON The author struck the annual caribou migration traveling east below Selkirk July 15, their path forming aboulevard 500miles wide, extending down the Yukon River to Circle. The main herds had crossed two weeks before, and only small straggling bands were seen, butthenumerous trails ribbing the steep hills on the east bank were evidence of the thousands that had crossed. On the west bank these trails arenotpronounced, asthe caribou enter the river through ravines, but climb out usually at any point where the current carries them.