Quill Creek, Yukon Territory Quill Creek flows from the Saint Elias Mountains in the southwestern part of the Yukon Territory. The Saint Elias range contains the highest peaks in Canada and is the source of mary of the headwaters that feed the Yukons extensive system of creeks, rivers, and lakesQuill Creek, Yukon Territory Quill Creek flows from the Saint Elias Mountains in the southwestern part of the Yukon Territory. The Saint Elias range contains the highest peaks in Canada and is the source of many of the headwaters that feed the Yukon’s extensive system of creeks, rivers, and lakes