Sun Tunnel
Sun Tunnels consists of four massive concrete tunnels, each eighteen feet long and nine feet in diameter, laid out in the desert in an open X configuration. On the solstices, the tunnels frame the sun as it passes the horizon at sunrise and sunset. In the top of each tunnel, Holt drilled small holes to form the constellations of Draco, Perseus, Columba, and Capricorn. These holes, and the tunnels themselves, act as frames or lenses through which the visitor can view the surrounding sky and landscape of the Great Basin Desert.