You get it with a guy in front of a tree in rute 11 he will give it to you
There will be a kid facing a weird tree talk to him and he will give it to you
tm43 in emerald is secret power
You get it at slateport city dude.
to make a secret base in certain trees bushes or indents in rock
You can't, unless you mean secret base. You have to have a Pokemon with Secret Power. Use Secret Power in front of a tree or an indention in rock.
go to the big tree on route 111
it is TM number 43
If you go through the dessert in Pokemon emerald, Sapphire, or ruby, you'll see a boy standing next to a tree. Talk to him and he'll give you the TM Secret Power.
don't know but u can get a secret base by teaching your Pokemon secret power
after u get secret power and hidden power some guy in slateport market sells them
on sapphire/emerald this one boy gives you the move secret power. use it to make a secret base!
they are secret bases you need to teach a Pokemon secret power first to use them
Those are secret bases to create one use the move secret power.