United States and Canada
Glacier National Park contains some of the most beautiful, primitive wilderness in the Rocky Mountains. There are more than 200 glacier-fed lakes, high peaks, sheer precipices, large forests, waterfalls, much wildlife, and a great variety of wildflowers. However, temperature fluctuations have caused glacier growth and depletion. Ten thousand years ago, the area of Glacier National Park was covered by ice up to one mile below sea level. The latest warm period has caused the number of glaciers to decrease from 150 in 1850 to 26 today. If current global warming trends continue, there will be no glaciers left in Glacier National Park by 2030.