With the combined powers of Burn and Stone, you can blow your top as a volcano. Use the Control Pad to aim and B to erupt.”
— Description • Nintendo Power (Volume #134)
Volcano is a combo ability obtainable in Kirby 64: The Crystal Shards. Kirby obtains it by combining the Stone and Burning abilities. When he activates it, he shoots rocks upwards from a volcano hat like a cannon. The rocks go half as far and are fired less rapidly when Kirby is underwater. Kirby can also tilt sideways to attack. Whatever side Kirby is not facing is still vulnerable to damage from enemies themselves or projectiles.
B (Hold) + → (Optional)
Kirby becomes a volcano and launches a stream of hot rocks that destroy enemies. By pressing ← or → Kirby will tip and allow rocks to hit enemies that could not be normally hit.
Kirby turns into a little volcano that can shoot lava rocks in any direction.”
— Description • Official Strategy guide
Kirby transforms into the world's smallest active volcano, shooting out lava rocks at his enemies.”