"A [Nenets] herder relies on the instincts of his lead reindeer. When lost in a blizzard with no hope of finding the camp, he'll look to the lead reindeer to show the way. If the animal hesitates, or perhaps sneezes, while attempting to cross a frozen river, the herder will turn back or look for a new crossing point."
(Text from "Nenets: Surviving on the Siberian Tundra," March 1998, National Geographic magazine)
(Photograph shot on assignment for, but not published in, "Nenets: Surviving on the Siberian Tundra," March 1998, National Geographic magazine)