Appendix:Ruby and Sapphire walkthrough/Section 14

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This is the Bulbapedia walkthrough for Pokémon Ruby and Sapphire. This walkthrough follows the original Game Boy Advance version, not Pokémon Omega Ruby and Alpha Sapphire.
The guide for those can be found here.

Route 128

Route 128
Route 128, Underwater

Route 128 is situated between Route 127 to the north, Route 129 to the south, and Ever Grande City to the east. Captain Stern mentioned that he'd found an underwater cave here while exploring in his submarine. Team MagmaR/Team AquaS has now breached that same cavern with their stolen sub.

Seafloor Cavern, Entrance
Seafloor Cavern, Room 1
Seafloor Cavern, Room 2
Seafloor Cavern, Room 3
Seafloor Cavern, Room 4
Seafloor Cavern, Room 5
Seafloor Cavern, Room 6
Seafloor Cavern, Room 7
Seafloor Cavern, Deepest RoomR
Seafloor Cavern, Deepest RoomS

Seafloor Cavern

The long-forgotten Seafloor Cavern can only be reached from an underwater cave in the depths of Route 128. MaxieR/ArchieS has gone to great lengths to breach the seal that has protected this place for ages, in the hope of awakening the super-ancient Pokémon rumored to dwell here. He believes this Pokémon has the power to bring about the great future he desires, but the risks seem far too great.


When you first enter the cavern, you find Captain Stern's sub moored beneath the waves. Rise to the surface and take the north doorway to the next room.

Room 1

This room features two boulders that hinder travel. Go northwest and clear the way with Rock Smash, then use Strength to move the first boulder southward. Head east and move the second boulder eastward. At this point, there are two paths forward. The northwest doorway leads directly to the southeast part of Room 4. The southeast doorway leads through Rooms 2 and 3 to the southwest part of Room 4.

Room 2

Head south to a fork in the road. The eastern path has a cracked rock that can't be removed from this direction, so head through the doorway to the southwest instead.

Room 3

The doorway to the south merely leads back to the entrance. Instead, go through the northeast doorway.

Room 4

Via Room 1

Move the southeast boulder northward, then do the same to the eastern-most boulder. Push the east-central boulder westward and clear the cracked rock. Move the northeast boulder northward and clear the second cracked rock to the west. Push the northwest boulder westward and walk through the northwest doorway to Room 5.

Via Room 3

Move the southwest boulder northward and the west-central boulder eastward. Push the northwest boulder northward and clear the cracked rock. Move the northeast boulder eastward and walk through the northeast doorway to Room 6.

Room 5

This room has many strong water currents. Surf out into the water and ride the currents to a calm spot a short distance to the northeast. Sail east to ride the current to a patch of calm water to the northeast. Go east again to follow the current around the rock outcropping to the west side of the room. Surf westward and take the current to the northwest doorway.

Room 6

This room has many strong water currents. Surf eastward along the south wall to the second current, which leads a short distance northward. Go north from here to reach the west side of the room. Sail north once more to follow the current back and forth on the room's north side. Climb onto shore and go through the northwest doorway.

Room 7

This room has nine boulders that initially block any progress. If entering from the southwest, you'll need to move both southern-most boulders farther apart; if entering from the southeast, you only need to move the southeast boulder eastward. Next, push the middle boulder westward and the north-central boulder northward. After that, move the northeast boulder eastward and head north to run into one of the Admins, CourtneyR/ShellyS. She's looking for payback for what happened in the Weather Institute, and draws you into battle!

VS CourtneyR

VS ShellyS

Room 8

There are a dozen boulders here to block progress. Start off by moving the south-central boulder one step northward and the other two southern-most boulders farther apart. Push the first boulder one step westward, then shove the middle boulder one step northward. Move the boulders on the left and right farther apart, then push both the north-northwest and north-northeast boulders to the north wall. Finally, push the middle boulder to either side to reach the doorway.

Deepest Room

Go east to find TM26 (Earthquake) on the room's highest level before continuing along the downward-sloping corridor. At its end, you finally catch up to the villainous team's driven leader, MaxieR/ArchieS. He has discovered the fabled resting place of the super-ancient Pokémon, and stands ready to restore the creature with his stolen Blue OrbR/Red OrbS. With his plan so close to fruition, he's not about to let anything stop him, and drags you into battle.

VS MaxieR

VS ArchieS

Even defeated, MaxieR/ArchieS reaffirms his intent to revive the super-ancient Pokémon. Holding the Blue OrbR/Red OrbS high, he finally succeeds in awakening GroudonR/KyogreS. It escapes the cavern with a loud cry and emerges at the water's surface. Just then, he receives an urgent call from his subordinates outside. The great energy generated by the legendary creature has altered and intensified Hoenn's weather as expected, but to dangerous, unforeseen levels. The weather's dramatic shift to harsh sunlightR/heavy rainS influences any battles on the region's east side. The intense sunlight boosts all Fire moves and weakens all Water moves. The massive downpours boost all Water moves and weaken all Fire moves. ArchieR/MaxieS and a pair of his Grunts enter a moment later. He condemns the villainous team's actions and tries to reason with its leader, who seems unwilling to believe that his plans are falling apart.

Route 128

The group returns to the surface, where they witness the extreme weather firsthand. The power of the super-ancient Pokémon has surpassed expectations, forcing MaxieR/ArchieS to grudgingly agree to work with his rival to set things right. Once the others leave, Steven swoops down to assess the situation. He informs you that the oppressive weather seems to originate in Sootopolis City to the northwest. He's headed there to investigate, and suggests you do the same.

← Part 13 Mossdeep City, Route 125, Shoal Cave, Route 127
Ruby and Sapphire
Route 126, Sootopolis City, Cave of Origin Part 15 →

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