Physical Details
Approximately 300 km2 (120 sq mi) in area, the icefield's shape is roughly triangular, with an apex on its northern side, where a short gap separates the ice-mass from that of the smaller Overseer Icefield. Some reckonings include the icemasses of the Overseer massif, in which case the Pemberton Icefield's area may be considered to be ~60 km2 (23 sq mi) larger in area. Overseer Mountain is the highest summit in the region lying in the triangle between the basins of the Lillooet, Squamish-Elaho and Cheakamus-Green valleys, although the highest named summit in the Pemberton Icefield proper is Longspur Peak, on the main icefield's northwest flank above the Ryan River, although a higher, unnamed summit lies in between them, at the northernmost edge of the icefield. Just east of Longspur are Kwtamts Peak and Sisqa Peak (names from St'at'imcets language of Lil'wat people, whose traditional territory includes the eastern reaches and related valleys of the icefield). The southernmost summit of the icefield is Exodus Peak, which lies in the angle between the uppermost reaches of the Squamish River and the valley of the Elaho River, a tributary of the Squamish.
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