Thaidene Nëné, which means Land of the Ancestors in Dënesųłıné, is the homeland of the Łutsël K'é Dene First Nation.
Thaidene Nëné is also a protected area that spans 6.5 million acres (26,376 square kilometres) at the transition between boreal forest and tundra, and includes the east arm of Tu Nedhé (Great Slave Lake), the deepest freshwater source in North America. It also provides habitat for grizzly bears, wolves, moose, and muskox, and the critical wintering ground of Ɂetthën (caribou). Thaidene Nëné is designated by Łutsël K'é Dene First Nation as an Indigenous Protected Area. Thaidene Nëné also includes a National Park Reserve and a Territorial Protected Area. Management of Thaidene Nëné is cooperative, with Indigenous, federal, and territorial governments and organizations all working together.
