It covers 1.4 square miles (3.6 km2) and contains 4.5 billion ft3 (127 million m3) of ice.
[1] Starting from the high-altitude cliffs above the Sunset Amphitheater at over 12,000 feet (3,700 m), the glacier flows west down Mount Rainier.
[2] After leaving the Amphitheater, there is an icefall on the glacier where it plunges down below 10,000 feet (3,000 m).
As the glacier nears Jeanette Heights, it passes by several turns and becomes very rocky in comparison to the upper sections of the glacier.
The glacier splits into two arms before their termini, with a shorter, northern arm ending at 5,500 feet (1,700 m) and the longer, larger southern arm ending near a stand of conifers at 5,100 ft (1,600 m).