tanoby key? do you mean braille key? If so, it's in the one island tunnel where you get the ruby.
There is no sleeping Pokemon in the Tanoby Chambers on Pokemon FireRed. However Unown do appear in these Ruins once you've solved the Tanoby Key puzzle.
The tanoby key, and the tanoby ruins in island seven. and of course completing the pokedex!
Once you have finished the boulder puzzle in Tanoby Key which is a cave located on Seven Island you can find the pokemon Unown inside the Tanoby Chambers just walk around for a bit and you will find one.
Tanoby Ruins
Once you finish the boulder puzzle in the cave called Tanoby Key on Seven Island enter the Tanoby Chambers and walk around eventually a Wild Unown will appear.
In one of the tanoby chambers. You have to solve the puzzle in the tanoby key which is in the grassy area of the sevault canyon NOT the canyon entrance. You need a Pokemon with strength to solve the puzzle.
Besides the TRAINER TOWER in the north there's also the TANOBY CHAMBERS in the south which inside you can find the Pokemon unown but only after finishing the boulder puzzle in TANOBY KEY.
in the tanoby ruins
you will find unowns in them
in the yellow area
the tanoby chambers
i am not sure what question is but try going to tanoby key( little cave before ruins) and push boulders into the slots. that will make unowns appear