Locate the unmarked Sunken Barrow in the eastern part of Lake Ilinalta, the activator for the excavation is underwater. Excavation takes 12 ingame hours, after which a door to Sargruunde will be accessible.
|Sanamia's Journals - Lake Ilinalta (DBM_JournalDungeon04QST)|
|5||I found one of Sanamia's journals which talks about a sunken ruin in Lake Ilinalta. I should see if I can find it.
Objective 5: Excavate the hidden chamber
|10||I have cleared the rubble blocking the doorway of the ruins at the bottom of Lake Ilinalta. Whatever is inside has likely not been seen or touched in ages.|