There's very little for you to see outside of the Giant Chasm, although there are some Pokemon inside of the patches of grass. There's something cool about running into a wild Crobat or Tangrowth, which you can do if you enter some shaking grass and get lucky, but other than that, there's nothing too new here that wasn't on Route 13.
Head down the steps and into the cave in the middle. There's nothing to the north of interest, but feel free to look around if you have the compulsive urge to explore.
Giant Chasm (Cave)
As soon as you enter, you'll see your destination waiting down a chasm directly to your north. The trick is getting there. Start by heading west, picking up the Big Mushroom hidden in the rock down the steps.
Keep heading west until you reach a corner. Push that boulder out of the way to gain access to a Star Piece. Now keep going north until you reach the northwest corner. There's another boulder you can shove out of the way to get another Star Piece. Keep going east until you find yet another boulder to move, although this one has the much rarer Comet Shard on the other side, which can be sold for a lot of money — $60,000 if you bring it to the rare item collector in the Icirrus City Pokemon Center.
After all of that, you'll find yourself in the northeastern corner. There's a fork in the road, and you can either surf on the left or jump down a ledge on the right. You're going to need either Surf or Strength; if you have Surf, go ahead and surf across the water, which will lead you to a narrow path that takes you to the center chasm. Otherwise, jump down the ledge and it will take you around to the beginning, although there is a boulder you can move that leads you to the same place the water took you in the end: the center exit.
Giant Chasm (Forest)
The misty forest is a very confusing section due to its winding nature and numerous one-way ledges. Be wary! There are also the highest-leveled wild Pokemon in the game here, found within the thick grass, so keep that in mind!
Right to your left when you enter the forest, past some grass, you'll find a Max Elixir. Consider that the southwest corner in your mind.
Now, head north, which is along the western side of the forest. There's a Max Potion waiting for you along the way, followed by a ledge you'll need to jump down. From there, head north and then off to the east a little.
You're now in the northwest corner or so. Grab the Revive just to the north (in the thick grass) and the Carbos down by the rocks diagonally southeast from the Revive, inside of some normal grass.
Walk on over to the east, but when you see the ledge to your north and some thick grass to the south, walk through the thick grass to get the extremely useful TM13 (Ice Beam) — a powerful 95 power Special-based Ice-type attack that even has a chance of freezing your opponent. It's arguably the best Ice-type attack in the game, or at the very least the most widely respected. And now it's yours!
Now begin your descent southbound, picking up the Full Heal tucked away in the thick grass to your left. Keep heading south until you see some more thick grass, as well as a rock off in the northwest corner. This is where things get slightly more confusing, so try not to get too lost.
Head south, because there's nothing interesting to your east at this point. You'll need to go a little bit to the west. There is some more thick grass there. Head into a small clearing where you can take a narrow path through the trees eastbound. That leads you over to a Max Revive. Head back out to the thick grass, then head east a few steps. On the northern edge of this little area is TM03 (Psyshock) — a fairly strong Special-based Psychic-type attack that uses the target's Defense rather than Sp. Def, making it rather interesting.
Keep heading west until you find a ledge. Do NOT jump down the ledge unless you want to start at the beginning! Instead, walk north until you find a little section of the forest with two trees in the middle and another ledge to the north. That is the ledge you want to jump down.
Down the ledge, walk east (do not go too far north) and travel through the thick grass. As you approach a small pond in the middle of the forest there, you'll hear a loud cry and in an instant, the whole forest will flash-freeze! Whoa!
Now that there's literally nothing here for you but a ton of snow, make your way north until you see some steps leading up into a cave.
Giant Chasm (Kyurem's Lair)
Unless you knock out Kyurem and then proceed to beat the Elite Four and Champion, you won't have easy access back to this place, so catch anything you want in here before taking on Kyurem. You can get everything elsewhere, but not at such a high level, so don't worry too much.
Make sure you save your game before talking to the big ol' ice dragon, because you do not want to miss your chance to catch this beast of a legendary Pokemon!
|Giant Chasm (Kyurem's Lair)|
|Kyurem Lv. 75|
Kyurem is a very menacing looking beast, but it is also a pain to catch due to its low catch rate and powerful attacks.
It knows Glaciate (an Ice-type attack that lowers your Speed), Dragon Pulse, Imprison (to keep you from using Dragon Pulse), and then, the kicker, Endeavor. What is annoying about Endeavor is that, if you greatly weaken Kyurem, it will then set your Pokemon's HP equal to its own. Thankfully it only has 5 uses of that attack, but it still may require the use of Hyper Potions to restore your HP while you burn through those uses.
It has a fairly good amount of HP, as well as very impressive offensive stats, so don't worry about hitting it too hard; it's not going anywhere anytime soon. Fighting-, Rock-, Dragon-, and Steel-type attacks are your best bet against it for massive damage.
There's nothing it can do to heal, and unlike Thundurus and Tornadus, it will not run away from you, so it's just a matter of time before you catch it. Dusk Balls are the best type of Poke Ball you can use against it. Other than that, it is about as difficult to catch as any of the legendary trio, so expect to use up to 30 Dusk Balls on it before you catch it. It is all a matter of luck, though, so hope that you get lucky and catch it in less.
After you've caught or knocked out Kyurem, when you leave the cave, you'll find that all of the snow is gone and you're now in the northeastern corner of the forest. Only one way to go from here and that's south, jumping down the ledge, and appearing closer to the southeastern part.
You can walk back to the first cave by heading west, otherwise just Fly to get out of here. You can go wherever, but Lacunosa Town is going to be your eventual destination! Hopefully you stopped by there long enough to be able to Fly there.