Can you tell me about their culture? 
 Do you have more information on that? 
 Im more interested in their geography 
 The rivers in the Yukon flowing in to the Mackenzie in the Northwest Territories are the Liard River in the southeast and the Peel River and its tributaries in the northeast. 
 Sorry! I don't have much information about that. But, The territory is named after the Yukon River, the longest river in Yukon.
The rivers in the Yukon flowing in to the Mackenzie in the Northwest Territories are the Liard River in the southeast and the Peel River and its tributaries in the northeast.