Vast Poni Canyon

Vast Poni Canyon (Japanese: ポニの Great Canyon of Poni) is a location on Poni Island in Alola. It connects to the Ancient Poni Path in the south and to the Altar of the Sunne/Altar of the Moone. It is the location of a natural trial site, and in Pokémon Sun and Moon, it is also where the player battles Hapu in her grand trial and meets Mina, the sole captain of Poni Island.

The area produces a special magnetic field that allows, , and to evolve when leveled up here.

Trial
The trial site is located at the north end of the canyon. The trial begins once the player enters the trial site; they can leave the way they came in at any time, although this will reset the trial. If the player loses the battle against the Totem Pokémon, when they attempt the trial again they will only need to battle the Totem Pokémon; however, if they then leave after this, the trial will be reset. The player cannot use Charizard Glide during the trial.

This is a natural trial that has no Trial Captain, said to be the first ever trial. A tablet at the entrance of the trial site explains the trial. The undefined proceeds forward through the trial site, being attacked by a wild and a wild  that leap from up high as the player proceeds toward a Z-Crystal pedestal. If the player tries to proceed out of the passageway behind the pedestal, they will be forced to turn back due to the fear that the Totem Pokémon will attack them from behind. When the player attempts to take the Z-Crystal from the pedestal, they are unable to retrieve the Dragonium Z before being attacked by the trial's Totem Pokémon, a.

In the battle with Totem Kommo-o, it will call / on its first turn, and call if its HP is below 2/3 (if the ally Hakamo-o/Noivern has been defeated). If its HP drops below 2/3 before it has a chance to call an ally, it will call Scizor first, then call Hakamo-o/Noivern at the first opportunity after Scizor has fainted. Once an ally is defeated, Totem Kommo-o cannot call it again.

After completing the trial, the player collects the Dragonium Z from the pedestal.

Found in smashed rocks
Sometimes, after smashing rocks with Tauros Charge or Sharpedo Jet, items can be found in the debris.

Dropped after ambush encounters
Sometimes, after a from a dirt cloud is defeated or caught, it will drop an item.

Sometimes, after a Pokémon from a flying shadow at the trial site is defeated, it will drop an item.

Fishing
Sometimes when fishing, an item will be reeled in instead of a Pokémon.

Grand trial



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Pokémon Ultra Sun

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Pokémon Ultra Moon

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In the anime
Vast Poni Canyon first appeared in Family Determination!, where and  traveled through it on their way to the Altar of the Sunne. Along the way, Lillie constantly kept seeing obstacles in their way, such as thinking that two cliff-sides would have an invisible bridge in between them, and thinking up ways to solve said obstacles, only for her assumptions to be proven wrong by Gladion. In the final cave before reaching the altar, Lillie and Gladion came face to face with a  and its army of ally  and. However, with Gladion his  into a, the Totem Pokémon was quickly defeated. Soon after, the two were joined by, the rest of , and.

The canyon reappeared in Revealing the Stuff of Legend!, where Professor Kukui went back there to save Professor Burnet from the Jangmo-o and Hakamo-o. With his, Kukui was easily able to defeat the group of Dragon/Fighting Pokémon, allowing him to bring Burnet safely to the altar.

The canyon reappeared again in SM106, where traveled there in order to evolve his. In the canyon, he encountered Horacio, who was also trying to evolve his Charjabug. Horacio claimed that there was a special evolutionary stone in the canyon called the "Bug Stone" that could evolve any Pokémon. Sophocles subsequently challenged Horacio to a contest to see which one of them could evolve their Charjabug first. When Horacio tried to cross a plank bridge to get to the Bug Stone, the old bridge broke under his feet, leaving him hanging for dear life on one side of the canyon. Sophocles's Charjabug then evolved into, saved Horacio, and retrieved the Bug Stone, which Sophocles gave to Horacio, since his Charjabug had already evolved. However, much to Horacio's dismay, the stone had no effect on his Charjabug whatsoever, and Sophocles revealed that it was actually the special magnetic field present in the canyon that causes Charjabug to evolve. Afterwards, Horacio swore to evolve his Charjabug through and then challenge Sophocles to a  race once he had done so.

In the Pokémon Adventures manga
Vast Poni Canyon first appeared in the. It is the site where Hapu's deceased grandfather was buried. After becoming the Kahuna of Poni Island, Hapu set off to visit her grandfather's grave and show him that she succeeded him as the next Kahuna. After seeing how much Hapu loved her grandfather, decided to join her.

Later, Faba and a group of s arrived at Vast Poni Canyon. Faba sent some Employees off to capture Hapu so he could interogate her while he and the remaining Employees went to the Altar. There, Faba was attacked by Plumeria, who demanded that he tell her where Guzma was taken to after being kidnapped by a. Afterward, Faba was approached by and, who wished to know about the Aether Foundation's involvement with the Ultra Beasts that had appeared in Alola.

Trivia

 * Before being battled, Ikaika mentions that his idol is Professor Birch.
 * The Poké Ride music does not play here.
 * Despite not being found here in Pokémon Ultra Sun and Ultra Moon, a group of them still appears during the cutscene of Lillie crossing a bridge.

In other languages
Canyon von Poni Cañón de Poni Grand Canyon de Poni Canyon di Poni ポニのだいきょうこく 波尼大峽谷