In the fictional universe established by the television shows Buffy the Vampire Slayer and Angel, the Buffyverse, a Hellmouth is an area of massive supernatural activity.
"From beneath you, it devours."
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 demon and other supernatural creatures, becoming a "hot spot" for supernatural activity.
The Hellmouth is first mentioned in "Welcome to the Hellmouth", the first episode of Buffy, when Rupert Giles claims that the original Spanish settlers of Sunnydale called the area "Boca del Infierno," which Giles then translates to "Hellmouth" in English.
The energies emitted by the Hellmouth can have strange effects. Sunnydale High, positioned over the focal point, bore most of this supernatural...
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