Grand Tetons National Park

View of the Grand Teton Range along the Teton Park Road. The rugged landscape was partly shaped by alpine glaciers. The carved U-shaped valleys, cirques, and hanging valleys. A piedmont glacier filled parts of Jackson Hole valley to a depth of about 2,000 feet during the last ice age (Harris and others, 1997). Today, small remnants of glaciers and ice fields remain, and lakes in the valley fill low areas that were once filled with glacial ice.