There are 4 caves to release the unowns but in crystal there is MORE when you walk in the caves like omanite cave the words on the wall will say (water) that means water stone ho-oh cave is ho-oh in the front of your party. the first one you can walk in the words will say escape use escape rope the arodactal cave says flash use flash. use these only after you read the words.
and like dude this gold and silver not crystal duh!