In Pokemon Black 2 & White 2, after the player has seen every Pokemon in the New Unova Pokedex,
Professor Juniper gives the player a Permit, which grants player access to the Nature Preserve.
The Nature Preserve is accessible via plane from Mistralton City.
The Nature Preserve is home to many high leveled Pokemon, and also a rare Shiny Haxorus.
Format Ver.1.0.6-1, Post Updated Date:20180222_0015