At the desert resort
You sell it to the relic maniac, in the Undella mansion.
at the end of it
In relic castle
in the desert resort
It can be found in the Relic Castle in Pokemon Black Or White
fossil in relic castle
Yamask can be found in the Relic Castle.
Relic Castle Catacombs in the wild. You have a 15% of finding it.
Relic Castle after you beat the Elite Four.
its at the very end of relic castle it is VERY hard to find:(
it is in the desert near relic castle
The Relic Crown. It's just a little more valuble than the other relic items you've been collecting.