We take a look at how Stonehenge evolved from a traditional solar calendar, ritual sacrifice and burial site circa 3,000 BCE, to a military early warning signalling site.
As a pneumonic plague threatened Europe and Britain around 2,500 BCE, healers who understood their plant lore and the beneficial medicinal uses of colloidal silver became established. The area (Avalon) may even have gained mythical status thanks to its silver-infused waters and its healers. But it also starts to be invaded by bronze-age metal prospectors.
Stonehenge is thus transformed into an early warning signalling system against invaders to the South West of England with her valuable resources of copper, silver and tin. System operators would have used primitive silver-based heliographs sited on Bronze Age hill forts and barrows ranged to the North of Stonehenge.
The Hill forts and long and round barrows often had nearby stone circles as well, allowing them to note the time of day for signalling. Stonehenge Avenue, with its own numerous barrows and cursus, is built as a sighting range, whilst Avebury and Silbury Hill are also linked into the network via Milk Hill.
Over time, the easy alluvial silver from Dartmoor and the Mendips runs out, although the Romans and more modern Sapiens establish underground silver mines in the area centuries later.
By that time the class of Druid had emerged properly as healers and wise men and women, evolving from far-seers (deru-weid in PIE) to oak or plant-knowers (dru-wid in Proto Celtic). Stonehenge loses its main purpose as sacred groves instead became places of healing. Plants such as the oak's mistletoe, with its silver berry were considered especially sacred and beneficial. The oak itself was traditionally always venerated for its ability to feed the people on acorn flour, no matter what the grain harvest brings, whilst also providing strong timber.
It is a wild and speculative theory but hopefully it may lead to a better understanding of how connected we once were, and still should be, to Nature.