Here's the quest text:
[Quest Requirements]
Inspect the Kundara Dungeon
[Quest NPC]
Collapsed Sanctuary - Detective Gordon
[Quest Details]
Gordon got the information that Kundara Dungeon near the God's Sanctuary is leaking out strong gas. Get into Kundara Dungeon and inspect where the gas is seeping from. Tip: Kundara Dungeon can only be entered by Hel Krouzer (Quest).
! In Progress
>Inspect the Kundara Dungeon
! Reward
EXP 520000 0 G 21 S 00 B