at the oreburgh mining museum:)
You have to migrate it from a GameBoy Pokemon game. I migrated mine from my Emerald version. In Emerald, you find them in the back of the Fossil Maniac's house. Hope I've helped! .:Funkeheap15>.<:.
U get it from the fossil maniac
there is no such thing as a hippopotamus in pearl I think the question was supposed to be: "How do you get Hippopotas in Pokemon Pearl?" The answer is: You find it in Maniac Tunnel.
maniac tunnel, south of veilstone.
Find a fossil underground. I did.
You cannot get Cranidos in Pokemon Pearl unless you trade to get the Skull Fossil from a friend. You can only find a Skull Fossil in Diamond.
You have to let it evolve from a Hippopotas, which you can find at the Ruin Maniac's Cave
In Pokemon Emerald, the fossil maniac can be found in a house outside of Fallarbor Town. I'm not exactly sure when (Possibly after you get the fossil out of Mirrage Tower), he will not be in front of the hole in his house. Enter the hole, and you can find the other fossil, plus the cave has ditto in it, an excellent bonus. You can get there after you beat the elite 4
I can only find one fossil, defeat the Elite four then go to the fossil maniac and go in the cave, you will find Dittos in the far right you will find a fossil Your cheater, Shadow (the Hedgehog)
You can find TM Dig at the Ruin Maniac Cave.
TM28 Dig in Pokemon R/S is on Route 114 inside the Fossil Maniac's house.
on route 114, go inside the fossil maniac's house. his little brother will give it to you.