beat the 7 gym tate and liza then go in Stevens house he will give you dive and go on dark vportions of sootopolis around the dark parts around it go into a cave opening go ashore press b you should be able to see the gym it will not be open through figure out that by looking 128 and 129
under sootopolis
in sootopolis city
Go to Sootopolis.
sootopolis city
underwater near sootopolis city
well i forgot
Sootopolis city.
The Pokemon league!
simpliy the dark spot leading to sootopolis you have to use dive
Underwater, in the grass outside Sootopolis City.
You have to catch Kyogre and Groudon.
sootopolis city