Ancient sedimentary seafloor rocks geologists estimate as old as 1.4 billion years old in the Purcell Mountains on top of Grizzly Peak in summer. Grizzly Peak Roadless Area in the Kootenai National Forest, northwest Montana.
- Randy Beacham, all rights reserved
- Image Size
- 4928x3264 / 3.8MB
- Contained in galleries
- Yaak Montana Landscapes