ToME: the Tales of Maj'Eyal

I explored the scintillating caves to the last floor, killed all mobs and yet the quest progress does not show it. [Screenshot attached]

I suspect it might be related to me force quitting the game at one point and wonder now whether not being able to complete this quest has a considerable impact on the further play experience. The character is level 20 now.

Thank you for any advice.

It doesn't really matter if the quest completes as you don't get anything for it. However it's very likely that the boss teleported away to an unconnected section that you need to dig to.

If you force killed on that floor and it regenerated, it might not have regenerated the boss.

Thank you for the answers :)