Here's what you need to know about the Purification Chamber:
* It's not a place you go to. The Purification Chamber is shown in the anime, but it's not accessible in the game.
* It's where Shadow Pokémon are purified. When you purify a Shadow Pokémon, the game depicts the process visually as the Pokémon enters a chamber and emerges in its purified form. This sequence is a cinematic cutscene.
* It's triggered by the "Purification" mechanic. To purify a Shadow Pokémon, you need to use special items called "Purification Orbs" obtained from certain trainers. These orbs can be used on Shadow Pokémon with a special item called a "Shadow Heart". Once used, a purification sequence plays, and the Shadow Pokémon returns to its normal form.
In essence, the Purification Chamber is more of a story device than a gameplay element. The process of purifying a Shadow Pokémon is handled through the "Purification" mechanic in the game.