Tourists told to stop shoving coins into rocks at Giant's Causeway

Rust marks left by coins placed in the cracks of the stones at the Giant's Causeway, near Bushmills in Northern Ireland. — AFP

Northern Ireland's Giant's Causeway draws close to one million visitors a year but their habit of wedging tiny coins in cracks between the rocks – to bring love or luck – is damaging the world-famous wonder.

Now authorities are urging tourists to keep their coins in their pockets to preserve the spectacular landscape.