Hellmouths are places of increased supernatural energy. According to the mythology of the "Buffyverse", this is the area in which the barriers between dimensions are weak. The Hellmouth has a focal point, which serves as a portal between earth and Hell. For these reasons, the Hellmouth attracts demons and other supernatural creatures, becoming a "hot spot" for supernatural activity. The television series has confirmed that there are Hellmouths under Sunnydale, California and Cleveland, Ohio, as well as other unspecified cities around the world (cf. "Chosen").