The Tentacle Hollow
It’s the sixth Super Dungeon, so each floor past your best gives 6× the Topaz, and every 10th floor past your best gives 5 more Rubies than in the first dungeon. Reaching B50F here with any hero opens The Nari Sune Burrow.
Rewards
Same for all 6: Lasting bonus per floor of your best run:+0.2% SD Max Floor Reward
| Warrior |  Ancient Warrior's Badge ×10 |
| Wizard |  Ancient Wizard's Badge ×10 |
| Angel |  Ancient Angel's Badge ×10 |
| Thief |  Ancient Thief's Badge ×10 |
| Archer |  Ancient Archer's Badge ×10 |
| Tamer |  Ancient Tamer's Badge ×10 |
History
Changes to this Super Dungeon across game updates.