Visitors are jamming tiny coins into the gaps between the stones, and these coins are discolouring the stones as iron, nickel and copper leach out of them. There's a copycat element as people see others shoving coins between the stones and do the same themselves.
It's hard to see what the motive is for this "coin stuffing". They'll never see the coins again and probably will have forgotten all about them a week later. Tour guides warn visitors not to leave coins, but the problem persists.
Unfortunately tourist vandalism is very common. Graffiti, love locks, stealing cobblestones, carving names on ancient monuments. There's a general lack of respect for the places they're visiting and too much mindless self-indulgence.
It would be a shame if popular tourist sites are routinely closed to the public because vandalism has got out of hand. A spectacular canyon in Iceland, featured in Game of Thrones, is now closed to visitors after a huge influx of tourists has damaged vegetation and trails. Iceland as a whole is now so fashionable it's buckling under the same tourist deluge as many other places.
Where will it all end?
Pic: the Giants Causeway



