On the left are several natural alignments.
The rising and setting positions of the
moon, and the sun at lattitudes from
51 to 57 degrees north. The positions
of the sun at solstices during sunset
and sunrise, as well as the moon's
maximum and minimum elogations
are illustrated.

*From Stonehenge, by

R.J.C. Atkinson

On the right are some of the alignments
of Stonehenge. As illustrated, many
alignments exist which undoubtedly
indicate the astronomical significance
of Stonehenge's construction.

*From Stairways to the Stars,

by Anthony Aveni