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UK's current heatwave is exposing the outline of ancient hill forts and settlements
WeaponizedHat Retweeted:This is so cool. The UK's current heatwave is exposing the outline of ancient hill forts and settlements. Soil quality today is still affected by iron age construction, so the grass on top changes colour at a different pace in the sun. HT @holland_tom https://rcahmw.gov.uk/cropmarks-2018/
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