Heatran

Heatran is known as the volcano pokemon. It can make volcanoes erupt by stomping on the ground. It is a fire/steel type. It lives at the top of Stark mountain. You can get it in Diamond or Pearl by going to the top of Stark mountain with a guy named Bucky and going back to his house in the Survival Zone after you leave the mountain,then going back up to the top of the mountain where Heatran will be.