WATERTON LAKES NATIONAL PARK - Canadian Rockies: Including Banff and Jasper National Parks - page 411

The Red Rock Canyon Parkway leads through wildflower meadows.
Cameron Lake, at the end of the road, is a 2.5-kilometer-long (1.6-mile-long) sub-
alpine lake that reaches depths of more than 40 meters (130 feet). It lies in a large cirque
carved out about 11,000 years ago by a receding glacier. Mount Custer, at the southern
end of the lake, is in Montana. Waterton has no glaciers, but Herbst Glacier on Mount