It is a special type of glacier characterized by a large amount of rock debris scattered on its surface. Usually located in mountainous areas, the flow of glaciers drives rocks and gravel on surrounding slopes, forming a unique snow covered rock landscape. The terrain is complex and varied, and the erosion of glaciers has carved deep canyons and steep cliffs on the mountains. The melting of glaciers and the accumulation of moraines together shape the shape of the earth's surface. Ecosystems are usually relatively simple, but there are still some organisms that adapt to cold environments, such as alpine plants and cold resistant insects. Not only is it a treasure trove of natural beauty, but it is also an important subject of geological research.

Matanuska Glacier is a valley glacier located in Alaska, United States. 27 miles (43 kilometers) long and 4 miles (6.4 kilometers) wide, it is the largest glacier that can be reached by car in the United States. Its glacier terminus is the source of the Matanuska River. It is located near Glenn Highway, about 100 miles (160 kilometers) northeast of Anchorage. The Matanuska Glacier has a daily flow of approximately 1 foot (30 centimeters). Due to the melting of glaciers in lower areas, as of 2007, there has been little change in the position of glacier tips over the past 30 years.

Matanuska Glacier is a valley glacier located in Alaska, United States. 27 miles (43 kilometers) long and 4 miles (6.4 kilometers) wide, it is the largest glacier that can be reached by car in the United States. Its glacier terminus is the source of the Matanuska River. It is located near Glenn Highway, about 100 miles (160 kilometers) northeast of Anchorage. The Matanuska Glacier has a daily flow of approximately 1 foot (30 centimeters). Due to the melting of glaciers in lower areas, as of 2007, there has been little change in the position of glacier tips over the past 30 years.

Matanuska Glacier is a valley glacier located in Alaska, United States. 27 miles (43 kilometers) long and 4 miles (6.4 kilometers) wide, it is the largest glacier that can be reached by car in the United States. Its glacier terminus is the source of the Matanuska River. It is located near Glenn Highway, about 100 miles (160 kilometers) northeast of Anchorage. The Matanuska Glacier has a daily flow of approximately 1 foot (30 centimeters). Due to the melting of glaciers in lower areas, as of 2007, there has been little change in the position of glacier tips over the past 30 years.