Photo of the 3 strips described in the text.
https://media.mstdn.io/mstdn-media/media_attachments/files/108/058/609/172/002/517/original/cfb61f4878dedeb4.jpg
Can you guess what purpose these serve?
Each strip is about 5m wide, and 45 metres long. The strips are bordered with rectangular stones, and are lined with tarmac.
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