This enduring survival story set at the end of the last Ice Age is now celebrating its 20th year in print. When Maroo and her family become trapped on the Great Plain in blizzard conditions and with little food, they have only one chance of survival: for Maroo and her younger brother, Otak, to reach the winter camp and get help. The fastest trail to the camp is over the White Mountain, where there are treacherous glaciers, steep climbs, and mountain spirits. With the rest of their family depending on them, Maroo and Otak set out alone. But when Otak goes missing, Maroo is forced to make the most difficult of all decisions: to stay and search for her brother or to continue on to the camp in order to save the rest of her family. This modern classic offers readers a gripping tale of survival as well as a vivid portrait of prehistoric people. The 20th Anniversary edition has a striking new cover and a new Author's Note.