 Various parts of the escarpment have specific names; these include "Craig y Forwyn", the Maiden's Rock, "Craig Arthur" (Arthur's Rock), "Tair Naid y Gath" (the Three Leaps of the Cat) and "Craig y Cythraul" (Devil's Rock).The "Afon Eglwyseg" (Eglwyseg River) flows through the valley, joined by a number of tributary streams such as the "Nant Elli" and "Nant Craig y Moch".The head of the valley is known as World's End, and is a popular spot with walkers, cyclists and tourists.