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Prehistory and monuments
The Triskell Boom
How an ancient triple spiral became a modern Celtic badge, 3500 BC to today.
This is an interactive data study by Dr Tristan Hotham, built from open data. The map runs in your browser: explore it, search for places and switch layers. The write-up explains the method and what the data shows, and the data and code are open for anyone to reuse.
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