Faded Relic

The Faded Relic is the location where the player goes in order to evolve their Pokémon. Within the Faded Relic is the Luminous Chamber, with a light at the end in which the evolving Pokémon stands.

Evolving
In order to evolve, a very important task needs to be completed first. Obtaining the "Engraved Tablet" from Cliffside Cave (the light at the end of the room that appears only  after  defeating Golem) is one of the highest priorities an explorer needs in order to become stronger and progress through the game, as well as evolve that one loveable  Pokémon  you so very dream to have.