For centuries the Tłı̨chǫ of the Northwest Territories have relied on an intimate knowledge of the land and its wildlife to survive. The Tłı̨chǫ lived in a yearly cycle of following traditional trails in birchbark canoes to the barren lands in the fall to harvest the caribou herd; and then heading below the tree-line for the long northern winter until the warmth and life of spring returns."