Glacier Alley is a stretch of the 150-mile long Beagle Channel in Southern Chile in which a number of hanging and tidewater glaciers spill from the huge Patagonian Ice Field sprawled across the snow-capped Darwin Range. Cruising through this stretch, shipboard visitors are treated to close-up views of the shining icefalls, and lacy waterfalls tumbling down from the ice above. The bays beneath these glaciers are typically full of floating bergie bits. The channel may reveal glimpses of swimming sea lions or the frantic scurrying of steamer ducks fleeing the approaching ship. But most eyes are fixed on the glowing white and blue glaciers arrayed on either side of your passing ship.