mirage tower or desert underpass
go into the desert,and find the mirage tower
You can still find brand new versions of Emerald version on Amazon.com, and used ones could be found at ebay.com.
You can find Volbeat on Route 117 in Pokemon Emerald Version.
Mirage tower and underground tunnel in the fossil maniacs house.
sorry, you can't get riolu in Pokemon emerald version.
in the suber
you need action replay
there is no friendly berry
there is two fossils in Pokemon emerald one you can get in mirrage tower and 1 you can get after you beat the eliet four go to the fossils maniac and he will sent u to the desert underpass where you can find the other fossile (there will be wild dittos :)
A few
You do not " hatch " fossils in Emerald, but you can revive them at the Devon Corporation on the second floor in Rustboro City by talking to a scientist there.
in which version ? In emerald you can find it easily at Mt Pyre