You have to solve the Kabuto puzzle witch you can find by going through the ruins in the North-East part. You can't see the entrance, just try walking into some of the walls until you find one you can go behind. When you have solved the puzzle an entrance to the cave will appear.
You can find it in the Ruins Of Alph which is south of Violet City.
its the Union cave but you have to have certain hm moves to get to the ruins of alpha hope it helps!
cliff cave, cliff edge gate , ruins of alph and union cave . [[ use surf]]
There are two "caves" in the Ruins of Alph. The first is the Union Cave, which leads into the Ruins of Alph. The second is a series of caves which lead to the unown.
no
in Pokemon heartgold ruins of alph in Pokemon soulsilver ruins of alph
The Ruins of Alph.
next to violet city
Ruins of alph
It isn't at the ruins of alph. It's in between the Kanto and Johto region.
In the Ruins of Alph and the Safari Zone.
unkowns {pokemon}