The Volcano

The Volcano  is a gigantic and always active presence on Endless Island. It hasn't erupted yet, but constantly bubbles and spews with green lava.

This is where the Butt Witch was born after Reggie kicked some puberty books into the lava in The Butt Witch Forever.

The details of its connection to the island and the island's creation are currently unknown.

Trivia

 * The small lava creatures that are born from and live in the volcano are friendly toward Twelve, suggesting that the volcano itself isn't necessarily evil.