In Northern Ireland, we have a diverse range of rock forms. Basalt rock comprises most of ... The limestone in the Marble Arch Caves formed around 330 million years ago You may know what a cave ...

Northern Ireland's only UNESCO World Heritage site, the Giant's Causeway is a natural wonder of hexagonal basalt columns formed ... Hidden within Keshcorran Hill, the Caves of Keash offer an ...

Ireland is the only place where a unique fungus has been found that infects reclusive spiders in dark caves and turns them into “zombie-like” creatures, according to cave explorer Tim Fogg.