Glacial landforms are topographical features created by the erosive and depositional actions of massive bodies of ice, such as glaciers. As glaciers move, they carve out distinctive shapes through processes like abrasion and plucking. Key features include U-shaped valleys, which are much broader and deeper than river-carved V-shaped valleys, and cirques, bowl-shaped depressions found high on mountain sides. When the ice melts and retreats, it deposits unsorted sediment known as till, which can accumulate to form terminal or lateral moraines. Additionally, the scouring action of ice can deepen existing bodies of water, creating fjords, which are long, narrow, deep inlets along a coastline.