Go inside Registeels tomb(after going to sealed chamber.) Read the wall. It says "To those who inherit (something), shine in the middle. Translation: Use flash in the middle of the cave.
Forever
read sign, wait two minutes the door will open
Click A on the braille and wait around for 1min. DON'T DO ANYTHING AS THE DOOR WON'T OPEN
after you read the braille press down down down down and use fly then the door will open
You need 2 passwords to open the door, there given out by two people. One is a rocket at mt ember he gives it to you when you get the national dex. The other one will appear when you try to get the sapphire in dotted hole he will steal the sapphire from you then tell you the 2nd password. Now press A on the door to open it.
To get the ruby it's in Mt. Ember off to the right where the team rocket members are or were they will leave after you beat the Pokemon league. For the sapphire it's in the dotted hole and to open the door you need to use cut.
The braille inside the cave says this: Run around the room. Stay close to the walls. Good Luck.
This question is exactly how I thought, when I thought I had tried every trick in the book to get in. Until it dawned on me. You must use a pokemon that knows Cut, to "Cut" the door open. I felt incredibly stupid after seeing that the answer was so simple.
its a building on sixth island that contains the sapphire. to get in it, use the HM cut on the door to slice the it open. then fall down the hole u see wen u enter then go... up, left, right, and down. and there is the sapphire. hoped this helped!!! bye:)
Go to the dotted hole in 6 island take a Pokemon which knows cut stand in front of the door go to Pokemon in menu,to the Pokemon with cut and use it (like how you use fly)It will open go in ENJOY!!!!!!!!!
Read the braille then do the following: Step right twice then step down twice then use rock smash the door should open.
you open them by teaching a pokemon secret power and then tap A next to the indent.