I heard he is a really strong pokemon but I want to make sure
Well, he gets stronger when he's an Excadrill, but before he evolves, he's actually not bad. Oh, and by the way, you can also find him in Chargestone and Mitralton caves, as well as Twist Mt.
Dude drilbur is not only found in wellspring cave , its found in a numerous number of caves !!
These are the ones Chargestone Cave, Mistralton Cave, Wellspring Cave, Twist Mountain and you can get him in a dust cloud most of the times .
He's pretty useful and get alot strongerso I recommend getting him .