To solve the mystery of the Tanoby ruins (The ruins you were talking about), you need to solve something called the Tanoby Key. Before the Tanoby Key, the ruins are virtually useless, with no Pokemon to catch or items to collect, but after the Tanoby Key, there are All 28 types of Unown are released, and you can catch them. Nothing happens if you catch all 28, but its fun if you like to collect different forms of the same pokemon! Otherwise, just catch one for your pokedex entry. As for the Tanoby Key itself, I won't spoil it for you, because even if you want help, there's not much fun in getting a spoiler, but I will say this: It involves pushing boulders into holes. As for location, on your way to the Tanoby Ruins, you will find a grassy patch just to your left. At first, it looks like nothing, but at closer look, you will see a cave opening. This is the Tanoby Key. Have Fun!
You have to look for the lady and when you beat her she will take you to her house
Nothing.
You go to six island dotted hole at the ruins and use cut. Then you go through the holes in this order UP,LEFT,RIGHT,DOWN.
The secret is the Pokemon unown.
unown is it dums
On seven island near tanoby chambers.
You can get Mantine in the Tanoby Ruins and the Trainer Tower by surfing.
cheese
go to island 7 you need HM 04 move all the rocks on top of the holes in the cave at the of island 7 then unkown will show up in the ruins
Tanoby Ruins is the main location for catching Unown in Pokemon LeafGreen. To get the Unown to appear in the ruins you need to complete the Tanoby Key puzzle.
You must sort out the puzzle on the 7th island, e.g. drop the stones in the holes using strength.
In icefall cave at four island.
it wakes up the unknown in the caves at the bottom of the island
unown appear in the ruins at bottom of 7 island
The seven islands are part of sevii island that have the trainer tower and tanoby ruins ,tanoby key and there is the secret room and you can catch unown there
Beat the Elite Four, Get Rainbowpass from cello,and tada! You are at seven island
You go to six island dotted hole at the ruins and use cut. Then you go through the holes in this order UP,LEFT,RIGHT,DOWN.
You can get in Mystery island 7 but first you must fight elite four.
you will find it on island 7 when you complete the battle tower