Of all the treasures held within Chaco Canyon, the Sun Dagger may be the most enigmatic. A spiral petroglyph tucked behind three huge sandstone slabs proved to be one of the most sophisticated pre-historic calendars known. It was discovered by artist Anna Sofaer in 1977, and was well documented and commemorated in the "Mystery of Chaco Canyon" video, narrated by Robert Redford. Unfortunately, in 1989, the sandstone slabs slipped slightly, and we lost the Sun Dagger forever. We are proud to announce the Sun Dagger has been re-constructed in 3D for Mac and PC computers, a part of the "Anasazi of Chaco Canyon" computer program. Here is a sneak peak video.... Enjoy!