Follow the directions in these pictures:
http://bulbapedia.bulbagarden.net/wiki/Turnback_Cave
it worked for me in the diamond and pearl games and even in platinum.
Good Luck ;)
The most valuable thing for you in this moment, a map of the cave: http://www.gamefaqs.com/portable/ds/file/925602/45230 Syaoran from Portugal ;D Go to: http://bulbapedia.bulbagarden.net/wiki/Wayward_Cave I have just used it to get back out of Wayward cave and am now using it to get Earthquake in the secret entrance
You Can Find Him The Fire Map Or The Cave Map Hope That Helped You
There is a map of Mt. Coronet in the Sinnoh region.
same as diamond/pearl
use the diamond etc from down the bottom and just6 drag it to where you want it.
I don't think Turnback Cave is assessable on diamond.
It's hard but go to psypokes.com and they may have a map
There is a map from this link http://img515.imageshack.us/img515/3967/scan0013wr8.jpg Hope i helped : )
you have to look on the map, and near the valor lake there is an empty square, you should find it there.
You will have to defeat the Elite Four or complete the Sinnoh Dex (Sorry, can't remember which one it is!). Then, look on your Town Map, and you will notice a new path off Route 205 (south of Floroama Town) called Spring Path. Go down Spring Path to reach Sendoff Spring, where you will see the entrance to Turnback Cave.
yo, that's NT a chalenge! u just surf right of NEW BARK TOWN and look at your pokegear map card. U hav 2 get the map card from the old man in CHERRYGROOVE city first.
After beating the Pokemon league, a new destination will appear on your map, turn back cave. Go into Turnback cave and keep traveling deeper into the cave. If you find the 3 pillars before you go into 30 rooms, in the next room, Giratina will appear. Giratina is extremely powerful and you will need to have some pretty tough Pokemon to take him down. He will be at level 70.
it is map 12
NO THERE is no second map in diamond and pearl.(that includes platnium).
you need the marking map on your poketech and the you go between sangem town and route 219 until he will be down in the marking map and then go into the sea there
Giratina is at Turnback Cave (just off of Route 214). A gap in the trees appears at Route 214 after you defeat the Elite 4. Look at your Town Map after beating the Elite 4-- you should see 'the 4th lake of Sinnoh that was kept secret' by Route 214. Good luck battling Giritina- he is at level 70.
On the marking map you can't mark Pokemon but if a Pokemon is roaming it will be represented by a Pokemon face.