The Giant's Causeway in Northern Ireland is being damaged by visitors who insert coins into the basalt columns. This practice causes the coins to rust and expand, leading to physical deterioration of the rock and unsightly staining. Authorities, including the National Trust, have called for an end to this tradition, emphasizing the need for preservation of this world heritage site. They have initiated trials to remove the coins by specialized conservationists, aiming to restore the natural beauty and structural integrity of the site.
Visitors to the Giant's Causeway are damaging the site by wedging coins into the basalt columns, which causes the rocks to stain and crumble.
The coins rust and expand to three times their original thickness, corroding the rocks and leaving unsightly stains of copper, nickel and iron oxides.
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