Dive in front of the city. their is an opening in the dive spot. enter and go up to the surface. you are now in the city. :)
you have to distory the door
well i forgot
You have to catch Kyogre and Groudon.
The trees are blocking an inaccessible area in Sootopolis City on Pokemon Emerald. This area was accessed with the E-Reader however the cards needed to unlock it were never released.
The Sootopolis City Gym door is unlocked after you retrieve Rayquaza from the Sky Pillar.
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.....
This is because you have to go in the cave at the top of the town then the gym will open.
Go to Sootopolis city, go to the bottom part where you can dive then go underwater go out the door and on the grass around there will be the Relicrap
under sootopolis
He is at Sootopolis city...you can battle him only after the sootopolis incident
in sootopolis city
north of sootopolis city