With the Spirals at Fajada Butte, Chaco and at Hovenweep both indicating a knowledge of astronomy, and all the alignments at Aztec, Salmon, Chimney Rock and other outliers, a prediction can be made that more indicators should show up. Here are some resources and techniques used and ideas for future analysis.
a light shaft disappears - - want to know where? The research is ongoing and the location is not available at this time, however, preliminary findings indicate strong intention to mark solstice, equinox, and other times of the year. The technique is strictly photography and time lapse is showing great promise. There will be more pictures as they are available.