Arctic Cathedral, Scoresby Sound, GreenlandScoresby Sound is the largest fjord system on Earth, and the icebergs that drift through it can be extraordinary. This one stopped me cold. The spires and pinnacles rising from the waterline gave it the look of a Gothic cathedral, carved by nothing but wind, tide, and time. The light was coming in low from the left, raking across the face of the ice and throwing deep shadows between the towers. Bright white against that dark Arctic water. The sea was