ok so go to turnback cave and keep going fowrard and the giratina
you have to have been to the very bottom floor of the distortion world,beat Cyrus,fought giratina and then the back at turn back cave.
Go to Spring Path and there will be a cave that is turn back cave
turn back cave
Turn back cave is located at sendoff spring along the spring path. You get teleported here after you escape the torn world. You can't access it until you get the National Dex though.
keep going straight no mater what and eventually you'll reachGratiana
you have to beat the champion then there will be a cave called turn back cave on the route under veilstone.The best way through turn back cave i went was left left left up up up up up up until i got to the portal.
If you go through a door you just went through, you will return to the main room with an exit to the outside.
turn back cave
after you got the national pokedex there will be a new lake cooled turn back cave near route 214.
in d/p there is a hidden cave called turn back cave
if u killed giratina in the distortion world here is how u get it in turn back cave ]]]]]]]]]]]]] first you need to beat Cynthia then she wont block the entrace to turnnback cave then u have to see 4 pillars in turn back cave then giratina will be there HOPE THIS HELPS!!!!!
left left right up up left right up