Vendigroth Ruins, Surface
A. Entrance to the ruins. Spiders will pop up out of the "holes" next to the entrance, so be wary.
Vendigroth Ruins, Levels 1-2
Area Note The exits in the area are through vents in the walls.
1 - Container with Submarine Newspaper
2 - Vendigroth Key #1
It's just sitting on the ground. If you don't see it, check your companions. It opens the door right next to it.
3 - Container with Arronax Newspaper
4 - Vendigroth Key #2
As with key #1, it's just lying on the ground. It unlocks the door next to Exit D.
5 - Vivifier Schematic
The vivifier permanently increases all of your attributes by 1, so keep any eye out for its components. One component can be found on this level (#6). The other is on level 4.
6 - Elixir of Physical Prowess
Exits: A. Exit back to the surface. B. Exit between levels 1 and 2. C. Passage. D. Exit to level 3.
Vendigroth Ruins, Levels 3-4
1 - Vendigroth Key #3
2 - Velorien's Altar
This is the final altar for the Ancient Gods quest. If you've completed the other offerings in the quest, then by standing on the altar (that is, by offering yourself) you'll receive Velorien's blessing. If you're not working on the Ancient Gods quest, then don't stand on the altar. You'll die.
3 - Vendigroth Key #4
4 - Vendigroth Device
5 - Unknown Chemical Compound
It's a component of the vivifier .
A. Exit back to level 2.
D. Exit between levels 3 and 4.