Glacier National Park encompasses over 1 million acres (4,000 km2) and includes parts of two mountain ranges (sub-ranges of the Rocky Mountains), over 130 named lakes, more than 1,000 different species of plants, and hundreds of species of animals. This vast pristine ecosystem is the centerpiece of what has been referred to as the “Crown of the Continent Ecosystem”, a region of protected land encompassing 16,000 square miles (41,000 km2).

Glacier National Park has almost all its original native plant and animal species. Large mammals such as the Grizzly bears, moose, and mountain goats, as well as rare or endangered species like the wolverines and Canadian lynxes, inhabit this park. Hundreds of species of birds, more than a dozen fish species, and a few reptile and amphibian species have been documented. The park has numerous ecosystems ranging from prairie to tundra.