Rocky Mountains or Rockies, great chain of rugged mountain ranges in western North America, extending from central New Mexico to northeastern British Columbia, a distance of about 3220 km (about 2000 mi). The Great Basin and the Rocky Mountain Trench, a valley running from northwestern Montana to northern British Columbia, border the Rockies on the east by the Great Plains and on the west. The Rocky Mountains form part of the Great, or Continental, Divide, which separates …showed first 75 words of 7304 total…

…showed last 75 words of 7304 total…ee years, the gray wolf will be taken off the list of endangered species in the northern Rocky Mountains. Wolf biologists estimate that this goal may be met by the year 2002 without transplanting additional wolves from Canada. By 1997 these reintroduction efforts were succeeding beyond expectations of wolf biologists. Scientific classification: The wolf belongs to the family Canidae. The gray, or timber, wolf is classified as Canis lupus. The red wolf is classified as Canis rufus.