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The Ha-Iltzuk Icefield is an icefield in the central Pacific Ranges of the Coast Mountains in British Columbia, Canada. It is the largest icefield in the Coast Mountains south of the Alaska Panhandle, with an area of 3,610 km2 (1,390 sq mi). It is located on the west side of the Klinaklini River and the Waddington Range. The highest summit in the icefield is Mount Silverthrone, which is a mountain on the northeast edge of a circular, 20 km (12 mi) wide, deeply dissected caldera complex called the Silverthrone Caldera.