Final answer:
Several cirques forming close together can create a glacial horn or pyramidal peak and, through further erosion, develop pointed ridges (arêtes) and circar mountain ranges. This can also result in larger glacial valleys.
Step-by-step explanation:
When several cirques form in close proximity, they can lead to the creation of a distinctive geographical feature known as a glacial horn or pyramidal peak, when they erode the sides of a mountain from multiple aspects. If these cirques encompass a mountain, they can carve away at the underlying rock to such an extent that they form sharp, pointed ridges called arêtes. In some instances, circar mountain ranges are the result of this type of erosion, characterized by multiple cirques around a single mountain which may lead to the creation of a series of sharp peaks and ridges. Additionally, the merging of cirques may lead to the formation of larger glacial valleys if the ice flows out and down the mountain range.