I'm not sure what's going on here. This is an underground viewing of the aardvark's little cave shelter. This is part of a persistent walkthrough where the guests walk from one walkthrough habitat to another. Here, they enter the cave, go down the stairs, and can view inside the shelter, before going up the stairs and into the pangolin enclosure. For whatever reason, the guests never acknowledge this viewing at all. They walk right past it every time. You can see from the 2nd picture that the guests crowd up in the other area where they can't really see the aardvarks right now, but completely ignore where they should be able to see them from a few feet away. (Don't hate on the cave...it's not detailed yet because I don't want to spend the time on it until it's working as it should)