a quiet bay at giant's causeway with dark rocks along the coast and green cliffs under cloudy sky

atlantic basalt basaltic causeway cliffs cloudy coast coastal destination eroded erosion europe famous formation geology giants green heritage hills historical iconic ireland landmark landscape misty moody natural nature northern ocean outdoor overcast peaceful quiet rocks rugged scenery scenic sea seaside shore sky tidal tourism travel unesco unique volcanic wild bay giant#39aph39#s dark lining muted blend adding serene scene along under