CAMERUPT has a volcano inside its body. Magma of 18,000 degrees F courses through its body. Occasionally, the humps on this POKéMON's back erupt, spewing the superheated magma.
Sapphire:
The humps on CAMERUPT's back are formed by a transformation of its bones. They sometimes blast out molten magma. This POKéMON apparently erupts often when it is enraged.
Fire Red:
Leaf Green:
If angered, the humps on its back erupt in a shower of molten lava. It lives in the craters of volcanoes.