You do that by going to fight one gym leader
winona, the flying gym leader, the strongest type Pokemon would be electric, ice, and fire.
You need to step on every piece of ice one time. Then the staircase appears.
The sixth gym in emerald...is the gym in fortree city....and the leader is winnona...
You have to make every ice part cracked to make the stairs to the next part appear.
Any Pokemon with ice or electric moves
Defeat all of the Gym leaders on Emerald. ~KKMG1
The seventh gym badge in Emerald is located in Mossdeep City.
The Fortree gym.
there is no gym at pacifidlog
The fourth gym is the fire gym in fallorbar town.
you have to step on every ice on the floor without falling down into the hole
the 7th gym is in mossdeep city