The NASA site for Sun-Earth day 2005 (March 20). The theme is 'Ancient Observatories, Timeless Knowledge'. Includes webcasts.
The Exploratorium's multimedia website on the site of Chaco Canyon. Includes a webcast from the Winter Solstice 2004.
An article on the Borana Calendar by Laurance Doyle of the SETI Institute.
A news story on a solsticial alignment at a petroglyph site in Utah.
A slide show of Anasazi astronomical sites with extensive notes.
Alun Salt's weblog, musing on archaeoastronomy.
Observe video of light/shadow interplay on 1,000+ year old rock art marking equinox sunrise at a remote, newly discovered Colorado site.