Edge of the Cedars State Park Museum in Blanding, Utah, houses a sculpture that interacts with the sun, named Sun Marker. Sun Marker functions as a calendar, with dramatic plays of light on the solstices and equinoxes. The sculpture, created by Joe Pachak, is inspired by sun-watching customs of the prehistoric cultures in the four-corners region. The Sun Marker (2014) video is designed to educate visitors to the museum about how the sculpture works and its significance as a scientific case study. This short documentary film captures the beauty and scientific significance of Sun Marker and how it relates to the peoples of today.