National Geographic : 1955 Dec
© National Geographic Society 782 Ice Age Hunters Armed with Fragile Spears Sight a Herd of Woolly Mammoths Stalking big game, the first migrants ventured into glacier-gripped North America some 20,000 years ago, many anthropologists believe. As centuries went by, their descendants mixed with newcomers and peopled the land from Alaska to the tip of Tierra del Fuego. This grizzled patriarch and his family cross a snow-covered rise in Bering Strait. In ancient times a land route probably spanned the shallow sea, because glaciers tied up enormous amounts of the water that filled it in warmer epochs. These nomads were not mere ape men; they made weapons, almost certainly spoke a language, and wore furs.