The Grand Plateau Glacier heads in the Fairweather Range of the Saint Elias Mountains and trends west to a glacial lake about 2 miles (3.2 km) southeast of the mouth of Clear Creek on the Gulf of Alaska. La Pérouse called this glacier Le Grand Plateau in 1786, and it was mapped by U.S. Coast and Geodetic Survey as the Grand Plateau Glacier.
The Fairweather Range is the unofficial name for a mountain range located along the border of Alaska and British Columbia. It is the southernmost range of the Saint Elias Mountains. The northernmost section of the range is situated in Tatshenshini-Alsek Provincial Park while the southernmost section resides in Glacier Bay National Park. Significant peaks of this range include Mount Fairweather with an elevation of 15,325 feet (4,671 m), which is the highest point in British Columbia.
Mount Fairweather was named on May 3, 1778, by Captain James Cook, apparently for the unusually good weather encountered at the time. The name has been translated into many languages. It was called “Mt. Beautemps” by La Pérouse, “Mte. Buen-tiempo” by Galiano, “Gor[a]-Khoroshy-pogody” on Russian Hydrographic charts in 1847, and “Schönwetterberg” by Constantin Grewingk in 1850. It was first climbed in 1931 by Allen Carpé and Terris Moore. Read more here and here. Explore more of Grand Plateau Glacier here: