US EditionGiant's Causeway visitors urged not to jam coins into iconic rocks
- The National Trust urged visitors at the Giant's Causeway in Northern Ireland to stop jamming coins into the iconic basalt rocks as of May 2025.
- This warning follows increased damage caused by visitors leaving coins in rock crevices, a practice that grew in scale over the last decade despite the site’s natural importance.
- The Giant's Causeway features about 40,000 black basalt columns and faces ongoing threats including erosion and vandalism exacerbated by coins causing reddish-brown discoloration on the 60-million-year-old stones.
- Dr Cliff Henry explained that rusting coins expand, applying pressure that chips stone corners, and a specialist has already removed roughly 10% of damaged columns to prevent further harm.
- The National Trust emphasized the urgent need to protect the site for its economic and natural value by removing coins and appealing to visitors not to insert them to avoid further damage.
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Giant's Causeway: Coins left by visitors damaging Northern Ireland's World Heritage Site
Coins squeezed into the gaps in the basalt columns of the tourist attraction in north Antrim eventually rust and expand, putting pressure on the surrounding rock, staining it and causing it to crumble.
·United Kingdom
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Heritage body begs tourists to stop jamming coins into Giant’s Causeway
Visitors to the Giant’s Causeway, the world-famous tourist attraction in Northern Ireland, are being urged not to indulge in the popular ritual of wedging coins in between the site’s iconic stones.
·Atlanta, United States
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