More than 10,000 coins that tourists wedged into the basalt rocks of Northern Irelands Giants Causeway have been removed as part of a conservation effort. The coins corroded in the salty coastal environment, expanded inside cracks and put pressure on the ancient rocks, causing flaking and rust-coloured stains.

More than 10,000 coins that tourists wedged into the basalt rocks of Northern Irelands Giants Causeway have been removed as part of a conservation effort. The coins corroded in…

For years, visitors to the Giant’s Causeway have left behind more than photographs and memories. Coins were pushed into gaps between the site’s distinctive basalt columns,…