Call of Duty: Black Ops 4 IX Mystery Box locations guide for finding each of these special weapon crates that are hidden throughout the map. It's best to watch the video below, but I'll go over the general details in text as well. First off, think of this map as two circles. You have the upper area and that's mirrored directly below for the underground section. You can find a Mystery Box in every other room on this level.
The starting area is considered a void spot, when you move to any of the first side areas there are no boxes. As soon as you enter another room above or below, there's going to be a box. The next area won't have them, but the one after will once you go underground. It's a very easy layout and you'll learn it quickly. The visual showcase is below, read our review of the game below or check out the hub for more coverage and helpful zombie guides.
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