Glaciers shape the landscape through processes such as erosion, transportation, and deposition. As glaciers move, they pick up rocks and sediments, which act as tools to erode the land beneath them. This process, called abrasion, can carve out valleys, create ridges, and form U-shaped valleys. Additionally, glaciers can transport rocks and sediments over long distances, leaving behind moraines and creating features like drumlins and eskers. Finally, when glaciers melt, they deposit the sediments they were carrying, creating new landforms such as outwash plains and kettle lakes.