National Geographic : 1924 Mar
u-I ©Herbert G.Ponting MT. EREBUS SEEN OVER A WATER-WORN ICEBERG Mt. Erebus (13,350 feet) and Mt. Terror (10,750 feet) are the two loftiest volcanic sentinels of the Antarctic.Erebus isactive; Terror, quiescent. The furrows in the overturned iceberg in the foreground have been caused by the action of water.