paarikümne cm laiune ja kuni kümne cm sügavune liustiku liikumise suunas orienteeritud (radiaalne) U-kujulise ristlõikega vagu, mille on tekitanud aluskivimisse liustiku poolt surutud kivi, multiple, straight, and parallel U-shape gouge cut into bedrock by glacial erosion. They represent the direction of movement of glacier using coarse gravel and boulders carried along underneath the glacier as cutting tools, are larger than striae.