In the Midwest of New Zealand's South Island, it extends 40-90 km inland from the 450 km long West coast. Cook Mountain National Park is a narrow park, 64 kilometers long, the narrowest place is only 20 kilometers, covering 70,696 hectares, glacier area accounts for 40 [%]. There are snow mountains, glaciers, rivers, lakes, mountains and forests, as well as animals and plateau vegetation, etc. in the park, the surprise is incomparable in other places. The peaks of the Cook Mountains, which stand on the top of the mountains, are covered with snow all the year round, while many glaciers are hidden in the valleys of the mountains. There are deep ochre-colored ice-eroded lakes, clear green rain lakes, green mountains, unlimited scenery, the largest glacier in the mountains is Tasman Glacier, which is one of the largest glaciers outside the Himalayas. It is 29 kilometers long, 2 kilometers wide and 600 meters deep. At speeds ranging from 23 centimeters to 45 centimeters a day, it's almost imperceptible and slowly declining. In the interior of the glacier, because of its movement, with the debris of the mountain sliding down, coupled with sunshine, the surface of the glacier has formed numerous cracks and ice towers, forming a variety of shapes, dazzling.