- Category: British Megalithic
- Hits: 230
Only two type-D stone circles (see figure 3) are known to exist, called Roughtor (in Cornwall) and Seascale (in Cumbria). Seascale is assessed below, for the potential this type of flattened circle had to provide megalithic astronomers with a calendrical observatory. Seascale could also have modelled the harmonic ratios of the visible outer planets relative to the lunar year. Flattened to the north, Seascale now faces Sellafield nuclear reprocessing plant (figure 1).
Stone Age astronomical monuments went through a series of evolutionary phases: in Britain c. 3000 BC, stone circles became widespread until the Late Bronze Age c. 1500 BC. These stone circles manifest aspects of Late Stone Age art (10,000 - 4500 BC) seen in some of its geometrical and symbolic forms, in particular as calendrical day tallies scored on bones. In pre-literate societies, visual art takes on an objective technical function, especially when focussed upon time and the cyclic phenomena observed within time. The precedent for Britain's stone circle culture is that of Brittany, around Carnac in the south, from where Megalithic Ireland, England and Wales probably got their own megalithic culture.
The first steps taken by Megalithic Astronomy
- Category: Landforms
- Hits: 3825
Einar Palsson  saw the myths of foundation for Iceland's settlement (in 930) had Pythagorean roots. This manifested as a geometric connection between places on the landscape, especially on the south western region near Reykjavik, its only city. Coherence was established through organising space according to centres (things), circles and their diameters, the circles punctuated with places and alignments to other places, horizon events or cardinal directions.
Figure 1 The Cosmos of Rangarhverfi
- Category: Carnac
- Hits: 1284
In 1973, Alexander Thom found the Crucuno rectangle to have been "accurately placed east and west" by its megalithic builders, and "built round a rectangle 30 MY [megalithic yards] by 40 MY" and that "only at the latitude of Crucuno could the diagonals of a 3, 4, 5 rectangle indicate at both solstices the azimuth of the sun rising and setting when it appears to rest on the horizon." In a recent article I found metrology was used between the Crucuno dolmen (within Crucuno) and the rectangle in the east to count 47 lunar months, since this closely approximates 4 eclipse years (of 346.62 days) which is the shortest eclipse prediction period available to early astronomers.
Figure 1 Two key features of Crucuno's Rectangle
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