James Turrell

DDia has supported James Turrell’s Roden Crater since the 1970s. The project centers on a 400,000‑year‑old, three‑mile‑wide cinder cone about fifty miles northeast of Flagstaff, Arizona. After acquiring the site, Turrell began reshaping the crater’s interior into a vast naked‑eye observatory—an architectural instrument for perceiving sky‑light, solar cycles, and celestial events. Its precisely aligned tunnels and chambers are calibrated to phenomena such as the winter and summer solstices, turning the crater into a monumental fusion of landform, light, and cosmological time.