It is the dots, on the north face of the cave.
You will see the chamber and a wall with braille on it. The braille says 'Dig Here' You will soon gain access into the first sealed chamber. The wall will open (eventually) allowing you to catch Regice.
It says: "stop and wait for time to pass twice" which means just stand there for two minutes and the door will open.
go click on the tablet and dont touch any thing then the door will open then u can get inside & catch him go click on the tablet and dont touch any thing then the door will open then u can get inside & catch him
The sealed chamber is in the currents.
Regirock can be found in the Desert Ruins on Route 111. To open the chamber you must complete the puzzle.
There are 3 caves but to get into these caves you have to do a series of things you should probably find a guide before you do this because its very hard 2 explain, try serebii.net
behind the first gym
It's in the sealed chamber which is in route 134.
Go in the sealed chamber on the route west of pacifidlog town to find it you need the HM Dive. Solve the braille puzzle then the rock will open.
A subterranean chamber is a room or open space that is underground.