Throughout Tracy Arm, cascades streak down the towering cliffs, which can loom 1,220 meters above the waterline. None is more splendid than Hole in the Wall, a long, lacy torrent flowing down dark rock fringed by evergreens. Big ships maintain a respectful distance, but smaller boats sometimes nose underneath its flow, making for dramatic, if dangerous, photographs. (To capture the rich, creamy look of this cataract, SLR-camera-shooters should opt for a longer shutter speed.)