Established in 1908, National Bison Range in M…

Established in 1908, National Bison Range in Montana is a diverse ecosystem of grasslands, Douglas fir and ponderosa pine forests, rolling mountains, riparian areas and ponds. Much of the National Bison Range was once under prehistoric Glacial Lake Missoula, which was formed by a glacial ice dam on the Clark Fork River about 13,000-18,000 years ago. In addition to herds of bison, the refuge supports populations of Rocky Mountain elk, bighorn sheep mountain lions, bears, bobcats and over 200 species of birds. Photo courtesy of Bob Wick.