A moraine consists of the mound-like landforms made up of the rocks and soil carried and pushed along by the movement of a glacier. Moraines can look like rubble, lines, mounds, ridges of rock, or uneven grassland, depending on what part of the glacier has dislodged and carried the material. The side of a glacier will leave lateral moraines, which form ridges or rims on valley walls. Ridges in the center of valleys are formed when moraines from two different glaciers collide. Material that gets picked up/pushed by the front of a glacier forms a clump of rocks and soil called a terminal morain. Ground moraines, the most common, are made of accumulating sediments beneath glaciers, creating irregular landscapes covered in grass or other vegetation.