A view down the 400 foot well sunk into the chalk inside the great tower of Dover Castle, United Kingdom on the 26th of August 2020. Dover Castle is a medieval castle high on the hill overlooking Dover and the English Channel, it has been a significant part of British history for the past 9 centuries and is now a UK tourist attraction run by English Heritage. (photo by Andrew Aitchison / In pictures via Getty Images)
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