giant's causeway is an area of about 40,000 interlocking basalt columns,

giant39aph39s causeway area 000 interlocking basalt columns result ancient volcanic fissure eruption northen ireland united kingdom antrim atlantic background bay beauty belfast cliff clouds coast coastal coastline decorative europe formation geological geology giant heritage hexagon hexagonal irish landmark landscape lava legend mountain mythology national natural nature northern ocean rock scenery scenic sea shore stone summer texture tourism unesco water giant#39aph39#s famous awful lot generation visitors flocked immense beaches portrush portstewart