Quest giver: Rorric
Experience: 6000
Gold: 8000
RC: 15
Pre-requisite: Deep Trouble
Destroy the Saurian Nests
Report back to Rorric
After completing Deep Trouble, return back to Cassirdis after a few days then get near the well. You should hear somebody calling from within. Enter the well and you'll find Rorric inside. Talk to him to get this quest then continue to the large cavern where you cleared a group of saurians earlier.
There should be a new chamber that you can access, which is filled with more saurians. Destroy them and all their eggs until you get the prompt to return to Rorric. Report back to him to complete the quest.