Melokaanu tolluwaay yu Amerik gu Bëj-gànnaar

Modèle 3D bii dina la tax a xam melokaanu tolluwaay yu ñoŋ yi nekk ci Amerik gu Bëj-gànnaar, li dale ci Brooks Range ak Denali ci Alaska ba Rocky Mountains, Sierra Madre ak Appalachians.