Psywave Cave

As the name would suggest, Psywave Cave is home to some incredibly powerful psychic Pokémon, who congregate there to hone their inherent psychic abilities. It is unknown as to why they have chosen this cave specifically which, to all external appearances, is just like any other cave in both shape and mineral composition. Not even those humans who claim to be psychic can figure out what the Pokémon see in this place, or if it is even special at all. It is believed that an extremely powerful psychic-type dwelt here at some point in the past (or dwells here still) and that it left a lasting impression upon the cave, drawing other psychic Pokémon to it like a lodestone, although this isn’t something that can be proven with any certainty, because nobody has ever seen any signs that such a Pokémon ever existed here. Psywave Cave has a lower level which is pitch-dark, and is often blocked by the boulders that psychic-types lift around to hone their abilities. Bringing a Pokémon capable of dealing with them is advisable.