Glaciers shape the land through a process called glaciation. As glaciers move, they erode the land by plucking and abrasion. Plucking occurs when rocks and sediment are picked up and carried away by the moving ice. Abrasion happens as the glacier scrapes and grinds against the bedrock, wearing it down over time. This process creates features such as U-shaped valleys, cirques, and moraines. Additionally, when glaciers melt, they deposit the material they have picked up along their journey, forming various types of landforms like drumlins, eskers, and kettle lakes.