Glaciers shape the landscape over time through a process called glaciation. As glaciers move, they erode the land beneath them through processes such as plucking and abrasion. This erosion can create features such as U-shaped valleys, sharp mountain peaks, and moraines. Additionally, as glaciers melt, they deposit sediment and rocks, forming features like glacial lakes and eskers. Overall, glaciers play a significant role in sculpting and transforming the earth's surface over thousands of years.