Dunning's Spring Park located in Decorah has a beautiful waterfall and Ice Cave. It's a small walk to see an amazing waterfall nestled into what looks to be an historic home area. Small parking area that holds maybe 10 to 12 cars. It has a nicely built stone brings that crosses over the springs that leads to a set of stairs to view the grand waterfall at the top. The best pictures are most definitely taken from the bottom when you see all the natural beauty and it's rapids.

We decided to take the river trail Hudrahs loop/ River Trail to see if we could see the ice cave. At the start of the trail it was a very small foot trail with tall weeds. What I wasn't expecting was seeing so many Giant Hogweed plants along the trail (very toxic very poisonous invasive plant) growing along on both sides of this trail. We got to a small section where it was one person passage and then a bike zoomed by, it is a shared trail. The thicket was dense along and one small tree had fallen covering part of the trail and we continued on. There were not that many people on the trail when we went however when we got back to the parking area it was packed and with people parking outside along the drive.

Best advice get there early to beat the crowds 9am to 11am is when we got there and left. Also maybe think about wearing long sleeve and pants to keep your skin a barrier just in case that hogweed gets further out into the trail path.