Glacier Palace Great Spire (Japanese: グレッシャーパレス 大結晶の塔 Glacier Palace Great Crystal Tower) is a playable dungeon the player goes through in Pokémon Mystery Dungeon: Gates to Infinity. It has five floors and two bosses. This dungeon is accessible after the player completes Glacier Palace Western Spire. Recruited Pokémon automatically get sent back to Pokémon Paradise instead of staying with the group.
The Bittercold is battled in the Great Spire Inner Chamber (Japanese: 大結晶の塔 奥の間 Great Crystal Tower Inner Room).
Kyurem boss area
Kyurem using Glaciate
Bittercold's first attack
Bittercold's second attack
Bittercold's third attack
Glacier Palace with a small rainbow midway through the boss battle
Bittercold's red core exposed
Attacking the red core
Glacier Palace with a large rainbow after Bittercold's defeat
Glacier Palace breaking apart and collapsing
Great Spire Inner Chamber