Glacial features are the unique landforms created by the movement and melting of glaciers. As glaciers advance, they carve out valleys, shape mountains, and create distinct landscapes. For example, a U-shaped valley is formed when a glacier erodes the sides of a valley, while a fjord is a deep, narrow inlet created by glacial activity. When glaciers melt, they leave behind various features such as moraine, which is a pile of rocks and debris deposited at the glacier's edge. Other features include kettle lakes, formed when chunks of ice melt and create depressions filled with water. These glacial features tell the story of Earth's climatic history.