In Diamond and Pearl, the player character follows Cyrus and Team Galactic here to stop them from creating a new world. In Platinum, the player character does the same thing but just as they are about to fight Cyrus, Giratina appears and pulls Cyrus into the Distortion World.
Mt. Coronet is only shown in The Battle Finale of Legend!. As it is shown in the game, Cyrus attempts to control the legendary Pokemon, Dialga and Palkia, using the red chains formed by Azelf, Uxie, and Mesprit. However, his plan is stopped by Ash, Dawn and Brock, as well as Looker, Cynthia, and Team Rocket. A small universe is formed by Palkia and Dialga, and as it shrinks, Cyrus disappears inside, leaving Mars, Jupiter, and Saturn behind.
Caves, Tunnels and Mountains
Places of Interest
Valley Windworks · Fuego Ironworks · Galactic Eterna Building · Hallowed Tower · Lost Tower · Solaceon Ruins
Galactic HQ · Great Marsh · Spear Pillar · Snowpoint Temple · Sendoff Spring · Hall of Origin · Canalave Library
Flower Paradise · Seabreak Path · Distortion World Pt · Iceberg Ruins Pt · Iron Ruins Pt · Rock Peak Ruins Pt
|Other regions: Kanto (Sevii Islands) · Johto · Hoenn · Sinnoh (Battle Zone) · Unova · Kalos · Alola · Galar (Isle of Armor · Crown Tundra)|