Giant's Causeway: Over 10,000 coins removed to protect ancient rocks

More than 20 kilograms of coins, estimated to be around 10,000 pieces, have been removed from the Giant's Causeway in Northern Ireland. For years, visitors inserted coins into the gaps between the site's unique basalt columns, a practice that began as a gesture of luck or affection but escalated into a significant conservation issue.

The National Trust, which manages the landmark, grew increasingly concerned as the coins began to leave a physical mark on the rocks. A report from the Geological Survey of Northern Ireland recommended their removal, citing potential physical and chemical damage to the basalt. As the coins weathered, they corroded, leaving rust-colored stains on the dark rock and potentially exerting pressure on the surrounding stone.

The removal operation, which commenced in May of the previous year, was a slow and meticulous process. Specialist stonemason Nathan Morrow employed various techniques, sometimes requiring over 20 minutes to free a single stubborn coin. Methods ranged from using pliers for coins near the edge to employing a grouting tool for those lodged deeper within narrow spaces.

Dr. Cliff Henry, a nature engagement officer with the National Trust, expressed relief at the completion of the work, stating the coins were causing "significant damage." The successful removal ensures the protection of the ancient geological formation from further harm caused by this well-intentioned but ultimately damaging visitor practice.

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It is a relief, the coins were doing a significant amount of damage.