There four tunnels (each 18'x9'x4') were placed so they would precisely align with sunrise and sunset during the solstices. As described on the Center for Land Use Interpretation site, they are pierced with holes of different sizes to recreate constellations when the sun is overhead and the tunnels are otherwise dark on the inside. I saw a film made about their installation shown at Sightlines, Columbia's Wallach Gallery Holt retrospective last year. They may be the most beautiful pieces of concrete ever cast about.
|Miles from I-80|