Based on the preceding material and my own experiences, I interpret Stonehenge to be a structure with multiple purposes. It was a monument, of nearly imperishable quality, erected at a particular site of terrestrial energetic power and celestial significance long known by the peoples of the region. It was an astronomical observation device used to predict, in advance of their occurrence, those particular periods in the annual cycle when the earth energies were most highly influenced and charged by the sun, moon, and stars. It was a temple, built by and for the people, in which festivals of renewal were held at those charged energetic periods determined by astronomical observations. It was a structure built with particular materials (the diorite bluestones brought from 240 miles away and showing evidence of prior use in another sacred structure; the micaceous, green-tinged “altar” stone of unknown origin; and the great Sarsen stones), positioned in such a way as to create a specific form of sacred enclosure which functions as a sort of battery for gathering, storing, and expressing the earth energies of the site on the festival days.
Besides the periodic yearly times (both day and night) of those festivals, which the mathematics, structural engineering, and ground plans of structures like Stonehenge clearly reveal, prehistory has left us, via the myths and legends of the sacred sites, elegant information concerning the nature of the actual practices the pilgrims performed at the festivals. We are given indications of the powers of the sites by old surviving records of even more ancient folk memories. For example, the legendary Merlin tells King Aurelius:
Laugh not so lightly, King, for not lightly are these words spoken. For in these stones is a mystery, and a healing virtue against many ailments. Giants of old did carry them from the furthest ends of Africa and did set them up in Ireland what time they did inhabit therein. And unto this end they did it, that they might make them baths therein whensoever they ailed of any malady, for they did wash the stones and pour forth the water into the baths, whereby they that were sick were made whole. Moreover they did mix confections of herbs with the water, whereby they that were wounded had healing, for not a stone is there that lacketh in virtue of leechcraft.