From Bulbapedia, the community-driven Pokémon encyclopedia.
Chamber of Emptiness (Japanese: 空ろの間 Hollow Room) is a small cave found in Kalos. There is nothing in the cave other than two items: a Banettite and the Spooky Plate.
It is the smallest cave in Kalos. It resembles the Scorched Slab in Hoenn due to its small size, the fact that it only contains items, its location being near water and also due to requiring Surf in order to be accessed.
The Chamber of Emptiness is a small cave in Route 22. It can be accessed by surfing south of the route and scaling down a waterfall, then walking through a crop of yellow flowers to the entrance. The cave has a short narrow walkway which opens up into an octagonal-shaped room.
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