Caption: Aerial view of an esker in Blue Lake, 10 miles northeast of Elk River, Minnesota, taken in 1966. The image is one of 335 images available on a website (http://www.geology.wisc.edu/~maher/air.html) recently created by Geology professor Louis Maher.
Photo by: Lou Maher.
Date: 1966
200 DPI JPEG version
Caption: Lou Maher, geology.
Photo by: Michael Rothbart.
Date: May 2001
300 DPI JPEG version