Last year I saw this video, which was filmed by the music ensemble Quadrigarum at the mouth of the Turkey Creek tunnel, and I made it my mission to find out what this challenging, fascinating piece of art was all about. A few months later, I published this feature in the Pitch. Thanks to Tim for showing me around, Ashley for the musical/philosophical insight, the folks at Mid America Regional Council for the numbers/perspective, and to Scott at the Pitch for the helpful editing. You can read the whole thing here.