Gateway Base is the second dungeon of Underworld.
Stages
Act 21.1: Get Up Haros!
Act 21.2: Flag of Revolution
Act 21.3: Revolutionary Army
Act 21.4: Pain of Memories
Act 21.5: Danger Climbing the Wall
Act 21.6: Trauma Imprinted on Soul
Act 21.7: Stop the Revolution!
Act 21.8: Shoulder of Helpless Leader
Act 21.9: Lost Person
Trivia
Gallery
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Dungeon Navigation
| Dungeons of Grand Chase Dimensional Chaser | ||||
|---|---|---|---|---|
 Kricktria |  Mouspia |  Kounat |  Crimson River |  Burning Canyon |
| Stages | Stages | Stages | Stages | Stages |
|
Act 1: Abbey |
Act 11: Outskirts of Kounat |
Act 14: Demon World Station |
Act 17: Eternal Valley | |
| Raid | Raid | Raid | Raid | Raid |
 Underworld |  Bermesiah | |||
| Stages | Stages | |||
|
Act 20: Wilderness |
Act 23: Serdin Kingdom | |||
| Raid | Raid | |||
| Events | ||||
| Kounat Escape | Doki Doki Chase | Grand School | ||||
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