**POSSIBLE SPOILERS!** If you're talking about the path that is blocked by a fat guy in Victory Road, that path leads to Route 224, where you can see a white rock, and catch the legendary Pokemon, Shaymin (But there is an event for it, sadly.) But before you go there, you need to accompany Marley through the Victory Road part which is blocked off by the fat man. She mentions the "Pokemon of Gratitude" or the "Pokemon among flowers" very often, which is Shaymin. Hope this helps!
VICTORY ROAD IS BEST
you have to catch the legendary in victory road then talk to him
after you beat the elite four and get the national poke dex you can go in the cave inside victory road with the man blocking it
You have to see every Shinnoh Pokemon then see professor Rowan.
U can get it at battle tower but u need 48 bp i think? Im not for sure but around there
.....The Pokemon league......
u cant
victory road
VICTORY ROAD IS BEST
Make your way through route 223. When you get to a Pokemon Centre, walk into the cave on the left and you will be in victory road.
victory road is north of sunyshore city a the end of the cave before Pokemon league
in twin leaf town
same as diamond/pearl
After getting all eight badges sail upwards from sunnyshore city until you get to victory road. Get through victory road and you will be at the Pokemon league.
Beat the 8th gym leader and have a Pokemon that knows Surf and Waterfall to get to Victory road. go though victory road battle your rival and there you go.
all you have to do is follow the diamond/pearl walkthrough for victory road. I suggest looking up pokedream.com
In platinum,pearl, and diamomd on the way to the victory road