On my last trip to Madison I came home "the slow way", avoiding four-lanes and tolls. Just outside Rossville I pulled over and took this picture with my phone. This was as the double rainbow was beginning to dissapate. You can just see a band of color in the middle left of the photo where the double rainbow was. A couple of miles back up the road it was really strong and clearly visible. It was more visible here than this crappy phone photo shows.
It was one of the coolest things I'd seen in years and I had to document it... I just wish I would have had a better camera.