Dark and Shallow Water  

'I am not going to the banks again. Not after what those leeches did to my legs the last time. I have a solution that I believe will get rid of them, but I will not try it.

'If you want to go down there to the water and pour this in, you may feel free to do so. There are four places that are particularly bad, all near dead goblins. These corpses are probably their primary food-source, when they cannot find my legs.

'Head to the west. You will find the leech0infested water just before you reach The Drowned Deep.

The leeches infesting the Waterworks have grown out of control and are preventing the dwarves from exploring further.

Objective 1
Find the first goblin-corpse
Find the second goblin-corpse
Find the third goblin-corpse
Find the fourth goblin-corpse
Leeches swarm around goblin corpses near the Drowned Deep, west of the Rotting Cellar.

Gyrgir would like you to find the corpses the leeches have been feasting upon and spread the newt-toxin around them to kill the leeches.

Objective 2
Talk to Gyrgir at the Rotting Cellar
Gyrgir is in the Rotting Cellar, east of The Drowned Deep.

Gyrgir will be pleased to hear the leeches will no longer pose a problem to the dwarves.

first goblin-corpse is in The Drowned Deep at loc: 17.0S, 116.3W
second goblin-corpse is in The Drowned Deep at loc: 17.0S, 116.6W
third goblin-corpse is in The Drowned Deep at loc: 16.7S, 116.5W
fourth goblin-corpse is in The Drowned Deep at loc: 16.9S, 116.9W

You will know your at the right spot, when you recieve the message,
You see some leeches crawling in the water
Once you see this message, double click on the Newt-toxin in your inventory.