Superior Rock Collection

On a summer trip to the shore of Lake Superior, a few years ago, we had the opportunity to wade through the clear, icy cold waters.

This is a collection of colorful rocks in the shallow water near the Wisconsin shore of Lake Superior.

I used this as my desktop wallpaper for a long time and always thought it would be a challenging image for a large puzzle.

To see more of the detail, click on the image and a larger version will open in a new browser tab.