Volca Nui

Volca nui was Volcanous' Home island. It is called Volca-nui because of the massive volcano at the centre of the island. The lava in the volcano is mixed with energized protodermis, so if even a pebble falls into the volcano, a massive monster will come out and terrorise the world. Cold days are bad for the citizens of the island, as lava solidifies and gets mutated into huge beasts. It was later overun with Rakshi and the island was destroyed. Volcanous fell into the volcano here, and is plauged with self-doubt because he failed to protect the island from the rakshi.