Fluting

These erosions in the form of parallel channels are created by the action of water. The water spread out on a surface remains more or less compact as a whole. It will not have a uniform spreading but will form "spots" and remain as a whole as much as possible. On a sloping surface, the water keeps this consistency and flows following the lines. It will gradually dig the limestone along its path. Once the fluting process begins to dig through, the water becomes trapped in this micro furrow and continues its erosion.