Giant Chasm - Main Cave
|Seel||Water||Surf||30%, 60% (Rippling)|
|Red Basculin||Water||Surf/Super Rod||70% (Surf), 30% (Rippling, Fishing)|
|Blue Basculin||Water||Surf/Super Rod||70% (Surf), 30% (Rippling, Fishing)|
|Poliwhirl||Water||Super Rod||65% (Rippling)|
|Poliwrath||Water/Fighting||Super Rod||5% (Rippling)|
Head south until you reach the pair of Grunts. Hugh will appear behind and a Grunt will appear to your south. The pair of grunts will leave and you'll talk with the third Grunt. Hugh will leave, with the Grunt leaving soon after. Continue on south until you reach the boulder.
Use Strength on it and push it into the hole. Move north to the water and use Surf on it. Follow it north to the very end and grab the TM13 - Ice Beam there. Now Surf back south until you reach the path leading west. Move onto it and follow it to the stairs.
Move to the south edge of the area and head west past the doorway leading outside. Now turn on your Dowsing MCHN and use it to find the nearby Star Piece hidden in a rock. Move back to the south-most path and continue west. When the path veers north, follow it.
Strength will still be activated, so push the next boulder into the hole and collect the Max Repel behind it. Take the path north to the very north end of this area, past the two Grunts blocking an exit. At the north-west corner, turn on your **** Dowsing MCHN and use it to find the hidden Ultra Ball .
Continue east along the northern path and push the next boulder into its hole. Grab the Star Piece behind it. Keep heading east. You'll reach another boulder. Push it into the hole and find the hidden Ice Gem behind it with your Dowsing MCHN.
That's absolutely everything there is to do here. Move back around to the centre of the southern edge of the area. Let's head through the door on the south edge of the area, the one that's not down the stairs.
Giant Chasm - Route 13 Entrance
You'll be outside of the Giant Chasm. There's a few items to collect here. Move up the steps to your north-east first. Grab the Yellow Shard halfway up, then continue to the top. There's a wooden lookout here, with a hidden Moon Stone on it. Use your Dowsing MCHN to find it.
Move back to the entrance to the cave and take the stairs leading east instead. When you reach the top, follow the path back around west and continue west through the Dark Grass. There's a hidden Max Potion at the end, in the grass. Head back out of the grass.
You'll see a path leading south. This will take you to Route 13 . You can head there if you really want, but we have more important things to do! There are a couple of items that you can only get from this entrance though. Follow the path south until you reach some stairs leading down to the water.
Head down and run through the shallows to grab the Hyper Potion . There's also a Heart Scale hidden in a rock here. Head back into the cave. Head down the steps and enter the other doorway leading out of the cave there.
Giant Chasm - Crater Forest
Head north and you'll see Hugh watching a couple of Old Team Plasma Members facing off against New Team Plasma. Hugh, the reckless idiot, will scream at them all to get their attention. He'll shout at them and the Old Team Plasma Members will be rather confused.
A couple of New Team Plasma Grunts will move up to you and Hugh and take you on. You're each fighting a single battle though.
Trainer Battle: Team Plasma Grunt
The New Team Plasma Grunts will back off and the leader of Old Team Plasma will speak with you and hand you a Max Revive . More New Team Plasma Grunts will appear from the north-east. Old Team Plasma will hold them off and Hugh will run off to the north-east.
Now you can head after him yourself! First though, head west into the Dark Grass. Move through it the south-west corner and collect the Razor Claw there. Move out of the Dark Grass and move around the right side of the Old and New Team Plasma Members.
Instead of following after Hugh immediately, head north-west through the Tall Grass. At the north-west corner you'll find a Moon Stone . Move back to the Team Plasma Members and now head east through the trees, after Hugh. Move up the icy steps onto the ice.
Here's how to navigate the ice: After you're on it, move east, east again, north, west, south, west, south, south, south again, then east. You're now on the Plasma Frigate again.