In pokepark wii pikachus adventure in the lava zone camerupt says to make an iron top to play rhyperior's bumper burn. Well I made an iron top but I don't know what to do next!
Carry the iron top with you to the west, out into the center of the big open area thats surrounded by lava, Rhypherior should be standing there, talk to him. you need 20 berries to play. I suggest using your biggest friend.