Sorry honey, but issues like this don't warrant a thread. Also, it'd be a bit more helpful for those wanting to answer if you used a prefix, or if you specified which version you're currently having trouble with. However, to answer your question:
There are quite a few, actually.
Black and White: Castelia City (Answer Pansear), Desert Resort, Wellspring Cave (Dustcloud), Chargestone Cave (Dustcloud), Mistralton Cave (Dustcloud), Twist Mountain (Dustcloud), Challenger's Cave (Dustcloud), Victory Road (Dustcloud), Giant Chasm (Dustcloud)
In Black 2 and White 2: Desert Resort (With Dowsing Machine), Lentimas Town, , Wellspring Cave (Dustcloud), Chargestone Cave (Dustcloud), Mistralton Cave (Dustcloud), Twist Mountain (Dustcloud), , Victory Road (Dustcloud), Giant Chasm (Dustcloud), Seaside Cave (Dustcloud), Rebirth Mountain (Dustcloud), Clay Road (Dustcloud), Underground Ruins (Dustcloud), Relic Path (Dustcloud), Caselia Sewers (Dustcloud), N's Castle (Dustcloud)
And that's honestly the only way to get it in-game. So try those areas out! c:
If you have anymore questions, please refer to the appropriate Quick Questions thread for either;
Black and White :
[B/W] Quick Questions
Black 2 and White 2:
[B2/W2] Quick Questions
And now, due to this topic really belonging in one of the mentioned threads and not its own, I'm gonna close this thread. Hope the info helps ya!