Sootopolis can only be reached by using dive to go through an underwater cavern or by flying (if you've already been there). Surrounding Sootopolis is route 126. Somewhere on route 126 is a single dive spot which leads to the underwater cavern that goes into Sootopolis. You might have to look a while before you find this passage though.
go to the cave of origin in sootopolis
you go under water near sootopolis into a cave where a sub' is, go to the suface and go through the cave then go to sootopolis go to the left side of sootopolis, talk to steven, go in the cave to wallace, tell him rayquaza is in the sky plliar. head to pacifidalog and head right(>) and up toward a cave entrance, go through to the top, talk to wallace and go into the door go up the tower head toward raquaza fly to sootopolis talk to archie and maxie then talk to steven/wallece and head into the 8th gym Hope this helps!
You actually don't really find Wally, your old pal, in Sootopolis. You either have to try finding him in the west part of Sootopolis, or try resurfacing and surfing more to the west. I dont really know where Wally actually is, but if you find out, contact me at crazykim22@gmail.com.
You have to find Maxie and team magma in a cave between sootopolis and mossdeep. You will have to beet Maxie he awakens groudon with the blue orb he stole from mount pyre, groudon will leave. go to sootopolis and try to go the cave of origin. get to the bottom. And either kill or catch Groudon. then you can get into the gym
After you defeat the Mossdeep City gym leaders, you can either go to Sootopolis City or you can go to the Seafloor Cavern to defeat Team Magma. I would suggest going to Sootopolis City before you take on Team Magma so that once you've gotten through their hideout, you can just fly back to Sootopolis to capture the legendary pokemon.
Go to sootopolis and dive in the front of sootopolis! =)
Sootopolis City.
you have to go under water and search around the sootopolis on your map follow the rocks
you go back to sootopolis city.
you have to learn dive first beat the twins then get dive go on you way to sootopolis and when you see dark spots in the water use divethat's how you get into sootopolis
use dive to get to sootopolis and you can go in after you awaken rayquaza in the sky pillar to stop the battle between groudon and kyogre. After you do that, go back to sootopolis and talk to maxie, archie, steven and wallace.scott is champion
Go to Sootopolis.
you go in this cave in sootopolis city
In mossdeep city you have to go two houses next to the gym and get TM dive by steven go on the black part around sootopolis and use dive.
Go to sky pillar which is located on route 131 go to the top where you see raquaza and then he will fly to sootopolis. get out of sky pillar and fly to sootopolis and then.....
you go to sootopolis city
Go to Sootopolis.