I have lived in Duluth 20 years, and cannot believe I haven't tried this until this year! It was a blast, and a very memorable highlight of the summer. The water level was high, making for a very wet ride. I wish I had worn a bathing suit for the experience we had.
There was an adventure swim and the option to jump from a granite cliff, during a picturesque stop. The scenery is like the BWCA, with the cliff and pines. The staff were very organized, capable, and friendly. Two staff accompanied our group of rafts for safety and photos.
I cannot wait to do this again, and I have been raving about the experience to my friends.