Yale Glacier, 20 miles long, varies in width from 1.25 to 2 miles wide at its terminus. Note the “rippled levels”. In its lower portion, the glacier slopes at the rate of 600 to 700 feet per mile, attaining an elevation of 2500 feet three miles and a half from the front, and ascending gradually to 6000 or 7000 foot cirques east of Mt. Glenn.
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