Nahanni Butte (/nəˈhæniːˈbjuːt/ nə-HA-nee-BYOOT) (Slavey language: Tthenáágó "strong rock") is a "Designated Authority" in the Dehcho Region of the Northwest Territories, Canada. The community is located at the confluence of the Liard and South Nahanni Rivers in the southwestern part of the NWT.Although it was not normally accessible by road, a winter road was constructed yearly until an all-season road was completed in October 2010 as far as the Liard River.