Coins jammed in Giant's Causeway damaging rock
The Giant's Causeway has faced many threats to its survival, from mythical fights between giants to coastal erosion and rising sea levels.
Now – there's a new problem.
At first, you don't notice them but as soon as you see one, you start to see them everywhere, hundreds of them, in every fissure and crevice.
They're coins, inserted into the tiny gaps between one of Northern Ireland's most famous and most photographed natural resources, the basalt columns of the Giant's Causeway.
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