frozen basalt on the ceiling of the cave on the shore in iceland

basalt bay beautiful black bluff cave cavern cavity ceiling chamber cliff cryptic den dramatic europe frozen geology grot grotto hole hollow iceland icelandic incomprehensible jellied landscape lava mysterio mysterious mystery mystic mystical pictorial picturesque reynisdrangar reynisfjara reynishverfisvegur rock scenic set shore stark statuesque tourism travel trip vacation vik void volcanic weird wintery