The Giant's Causeway in Northern Ireland is formed from thousands of hexagonal basalt columns created by an ancient volcanic eruption. According to Irish legend, the causeway was built by the giant Finn McCool to allow him to fight his Scottish rival Benandonner. When Benandonner arrived in Ireland, Finn McCool's wife dressed him as a baby to trick Benandonner. When Benandonner saw Finn's enormous "baby", he fled in fear back to Scotland, destroying the causeway behind him and losing one of his giant boots still visible today.