#82153: F10-2 Ridges National Natural Landmark WI Aerial View

The Ridges Sanctuary is named for its distinctive topography, a series of 30 ridges and swales formed by the movement of Lake Michigan over the past 1400 years, creating Wisconsin’s most biologically diverse ecosystem.
Public Domain. The Ridges Sanctuary\Doug Sherman
Download Original (2400 x 1554 pixels, 4786.6 MB)