One of my favorite things about working at Carleton (and there are lots) is that you can discover all kinds of neat stuff on any given errand. F'instance, on my way to return a library book today, I came across this amazing sculpture, installed in a tree behind my office building. Photos fail to do it justice - it's startling, out of place, a bit disturbing, and beautiful, hanging there in an evergreen.
There was no information posted about the piece, but I suspect this guy and his students. I've put up a few more shots on Flickr.