Travels in Alaska by John Muir — Read

Next day I planned an excursion to the so-called Dirt Glacier, the most interesting to Indians and steamer men of all the Stickeen glaciers from its mysterious floods. I left the steamer Gertrude for the glacier delta an hour or two before sunset. The captain kindly loaned me his canoe and two of his Indian deck hands, who seemed much puzzled to know what the rare service required of them might mean, and on leaving bade a merry adieu to their companions. We camped on the west side of the river opposite the front of the glacier, in a spacious valley surrounded by snowy mountains. Thirteen small glaciers were in sight and four waterfalls. It was a fine, serene evening, and the highest peaks were wearing turbans of flossy, gossamer cloud-stuff. I had my supper before leaving the steamer, so I had only to make a campfire, spread my blanket, and lie down. The Indians had their own bedding and lay beside their own fire.

The Dirt Glacier is noted among the river men as being subject to violent flood outbursts once or twice a year, usually in the late summer. The delta of this glacier stream is three or four miles wide where it fronts the river, and the many rough channels with which it is guttered and the uprooted trees and huge boulders that roughen its surface manifest the power of the floods that swept them to their places; but under ordinary conditions the glacier discharges its drainage water into the river through only four or five of the delta-channels.