by hvered » 10:54 pm
The Megalithic System, generally speaking, is designed to make use of local features, local materials and (presumably) local labour. However this is not always technically possible and clearly the construction of gynormous obelisks is not only a skilled job in its own right, it can only be done where suitable stone is available.
The Megalithic System was a Europe-wide phenomenon. Carnac, situated right in the middle of Megalithia, is absolutely perfect for popping obelisks onto sea-going barges. Unlike, say, Dartmoor.
To judge from the evidence still lying around, it looks as though Carnac didn't only produce series of menhirs but was also in the business of supplying ready-cut stones for stone circles as well, which makes sense because there are plenty of places without suitable local geology.