The Ruins of Alph are a set of ruins located south-west of Violet City. These ruins have four different entrances in which to gain access to various Unown forms, two of which only accessible through Union Cave. There are a few hidden rooms which require you to use various moves or items which give even more items. If you turn your radio on while in the area, you will hear a very strange radio signal. The Unown are unlocked by the following puzzles being completed
ABCDEFGHIJK - North East
LMNOPQR - South West
STUVW - South East
XYZ - North West