“Within a radius of one mile round the berg there is thin young ice, strong enough to march over with care. The area of dangerous pressure, as regards a ship, does not seem to extend for more than a quarter of a mile from the berg. Here there are cracks and constant slight movement, which becomes exciting to the traveller when he feels a piece of ice gradually upending beneath his feet. Close to the berg the pressure makes all sorts of quaint noises. We heard tapping as from a hammer, grunts, groans and squeaks, electric trams running, birds singing, kettles boiling noisily, and an occasional swish as a large piece of ice, released from pressure, suddenly jumped or turned over. We noticed all sorts of quaint effects, such as huge bubbles or domes of ice, 40 ft. across and 4 or 5 ft. high. Large sinuous pancake-sheets were spread over the floe in places, and in one spot we counted five such sheets, each about 2½ in. thick, imbricated under one another. They look as though made of barley-sugar and are very slippery.”

— Frank Worsley