If you’re on the Essence of Aether mission in MW3 Zombies, you need to pick up the Essence Sample at the Quadri Shopping Center as the final task. Like the other containers, this can be hard to find without directions, and I have the exact location so you don’t get lost in the search.
Where to Find the Quadri Shopping Center Essence Sample in MW3 Zombies
The Quadri Shopping Center Essence Sample can be found in a small shack west of the roundabout in Zaravan City. When you look west of the roundabout, you will see a bunch of rectangular buildings on the border of the low-threat and medium-threat zones. In the center of all those buildings is one small square that represents the shack you are looking for.