Slugma, Meditite, Rhyhorn, Houndour, Geodude, and Ponyta.
Uh.. Pokemon Volcano? I never thought there were a Pokemon game like that...But you can find gyms in some city's,but not in towns.
You have to go on the cable car, just north of the entrance to the Fiery Path.
You can catch him from the following places:Victory Road Floors 1, 2 and 3Safari ZonePokewalker on the Volcano Path
in ice path in johto.
You can find it at Faldera Volcano.
in the sun :P
gastrodon is on faldera volcano in a chamber next to the camber that leads to the path to where moltres sleeps
It's as common as a shiny pokemon. So everywhere. Especially the Volcano.
It is in the cave look every were then you will find it
You find him in spring path
ice path
firey path