An isolated area of Ten Carat Hill can be accessed from Melemele Sea using Sharpedo Jet. An isolated part of Ten Carat Hill: Farthest Hollow can be accessed from the west side of Ten Carat Hill's cave; in Pokémon Sun and Moon only, Machamp Shove is required to do this.
In the Pokémon Sun and Pokémon Moon Special Demo Version, a man at the northwest end of Hau'oli City by the Pokémon Center will guide the player here. He will also guide the player back to the city from the hill. In the demo, the area comprises the cave and the Farthest Hollow, as well as an open area which does not appear in the full game.
The layout of this location is completely different in the Special Demo Version to the full games.
Full games
Cave
The cave part of Ten Carat Hill is a linear path connecting the Route 1 entrance to the Farthest Hollow, with a series of breakable rocks and a long ledge on the northern wall along the way. There is a second exit to a cliff overlooking the Farthest Hollow that can be accessed by pushing a heavy boulder near the first exit.
Farthest Hollow
As the name implies, the Farthest Hollow is the deepest part of Ten Carat Hill. A short path connects the cave to the center of an X-shaped field, with patches of tall grass at the end of each path except the northeastern branch. The southeastern branch is also longer than the others, curving along the southern wall of the area and leading to another patch of grass with TM62 (Acrobatics)SM or TM23 (Smack Down)USUM at the end. A cliff isolated from the rest of the Farthest Hollow is also accessible through a second exit in the cave area; the player can find a Flyinium Z here.
On the south side of a rock at the end of the path blocked by a heavy boulder, near the second entrance to the Farthest Hollow (hidden) (requires Tauros Charge and Machamp Shove)
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Special encounters
Pokémon Sun and Moon
A Necrozma appears here after completing all of the Ultra Beast missions. Like the Ultra Beasts, Necrozma will respawn immediately after its defeat and the player can re-encounter the Pokémon by walking into the tall grass a second time. Unlike the Ultra Beasts, there is no music indicating its presence, using the normal Ten Carat Hill track that plays in the location.
The battle continued in Securing the Future!, where it, upon Faba revealing that he didn't have any more Pokémon, was left for Kukui alone. Using his Incineroar, Kukui was able to defeat Mega Aggron, although this allowed Faba to figure out that Kukui and the Masked Royal were the same person. After Team Rocket had been forced into retreat by Tapu Koko, Kukui, Faba, and Incineroar joined the other people and Pokémon in Alola in sending energy to Necrozma, with the Team Rocket trio and Bewear also doing the same nearby.