the process by which a headland is eroded

The provided picture clearly depicts the process by which a headland is eroded. Overall, it can be noticeable that there are 4 consecutive steps in the erosion process of a headland as elaborated follows: First of all, a gigantic cliff land area-or sometimes called a fjord or a cape, protruding into an ocean encounters erosion from the sea waves, thereby causing weak areas a rock eroded at its bottom. After that, enduring the long-lasting erosion, the bottom area is largely collided by heavy waves into such a big arch as Doodle Door in Dorset. At the next stage of the process, the roof of the arch collapsed by water beats, separating the headland area out of a standing remaining stack in the far site of the shore. Finally, due to the bygone time of everlasting erosion, the headland retreats into the coast, and the standing stack erodes, which results in its smaller size and leaves a stump nearby.