Yamnuska -Chapter III Yamnuska -Chapter III October 13, 2018 Mr. B Comments 0 comment Mount Lawrie, or Yamnuska or “Yam” (slang) comes from a Stoney-Nakota First Nations word that means the “Flat-faced Mountain”. Mount Lawrie, or Yamnuska or “Yam” (slang) comes from a Stoney-Nakota First Nations word that means the “Flat-faced Mountain”.