Matanuska Glacier, Alaska

Matanuska Glacier is a valley glacier in the U.S. state of Alaska. At 27 miles (39 km) long by four miles (6.4 km) wide, it is the largest glacier accessible by car in the United States. Its terminus is the source of the Matanuska River. It lies near the Glenn Highway about 100 miles (160 km) northeast of Anchorage. Matanuska Glacier flows about one foot (30 cm) per day, but as of 2007 the location of the glacier terminus had changed little over the previous three decades.