Kirikiri Mountain
The Kiri Kir Mountains are an anime-only location in Hoenn. It is located between Petalburg City and Fortree City. The mountains are foggy, limiting vision.
Within the mountains there is a mysterious cave that when given enough psychic power, allows a person and Pokémon to travel to another period of time. The cave is hidden in an alcove in one of the forest's trees.
Entering the cave, there are drawings on the wall from the Baltoy Civilization.
It made its appearance in Me, Myself and Time.