They are located at the Tanoby Ruins in Seven Island.
first you have to move 7 boulders on the main island before the appear
Chat with our AI personalities
The only thing to do in the tanoby chambers is catch the Pokemon Unown.
The tunnel on top the ruins is accessible.The tunnel is where you catch the ? and ! Unown.
I know people brag when they answer a question, but this statement is true: I HAVE ALL OF THEM NEATLY ARRANGED ALPHABETICALLY IN 1 BOX. Nothing happenned. :(
You have to catch the other 26 Unown first.
If you solve all 4 puzzles it will unlock the 26 "letter" unown. If you open the 4 back rooms (using an escape rope, flash, water stone, and Ho-Oh), catch all 26 unown, and talk to the researcher in the building it will unlock the ! and ? unown. Catch them and talk to the guy again. This will complete the unown side quest, but that's about it. Nothing really special unless you just really have to have all 28 unown.