Tatsan
Tatsan gives its name to the Taltson River, which flows through a chain of lakes and rocky channels towards Great Slave Lake. The name has been explained as a figurative word for copper, associated with the Dene people whom traders called Yellowknives or Copper Indians. In its upper basin, lakes lie among steep bedrock hills and deposits left by glaciers. Farther downstream, rapids and falls interrupt the river between its many lake expansions.