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.

Our Glacial Perspectives
Olafur Eliasson’s ‘our glacial perspectives’ pavilion comprises a series of steel and glass rings encompassing a circular deck which projects over the edge of mount grawand. From this point, the pavilion serves as an astronomical instrument that aligns the visitor’s gaze with the surrounding rings, which track the apparent path of the sun in the sky on any given day. The rings divide the year into equal time intervals — the top ring tracks the path of the sun on the summer solstice, the middle ring tracks the equinox, while the lowest tracks the winter solstice.