Twin Caves The left cave is the largest of the three, and shows the most evidence of expansion. Similar Images ...based on the tags: archways, black&white, carvings, caves, graffiti... Although the floors are pretty warped, I can’t imagine one could do many tricks off of them. A small upper level was accessible via ladder through the hole in this ceiling. Ben for scale. A look at the Longmont Sugar Mill in May 2014. Shells of mixing buildings. Kodak Tri-X 400, Leica M7. Serious enough to write across the side of the tank, but not serious enough to have a sign made. The company labs. If you can believe it, this area is even more destroyed today. A view of the Harris offices, complete with great block glass. A wide view of the poor house. Look at the smokestack and elevator shaft, which show the former roofline. A ruined culvert near Oregon Creek, behind Old Main, the predecessor of the University of Minnesota-Duluth.