(series, piece) Pressure ridge in second-year pack ice, McMurdo Sound, Antarctica. Shot at 2 AM from the ‘aloftcon’ (a tiny masthead pilothouse) of the icebreaker USCG Polar Sea, 105 feet above the waterline. Some of the ice visible is 6-8 feet thick. Applicable to series Rhegmalogia, and more specifically to Rhegmalogia: Interrogation