Secrets of the Map

So I’m playing Strongholds on Rig, and as soon as the game started I noticed an enemy player shoot the area under the active camo, dropping it to a lower platform. Like I had no idea that was there. wtf?

I always liked maps that were interactive in some way. Good examples include(but are not limited to) High Ground, Vertigo, and Last Resort.
Does anyone know of any Halo 5 Maps that are interactive in some way? Besides Rig of course, but I’m really curious about this…

Rig also has the giant sand-monster Easter egg.
Fathom and Riptide have areas that raise and lower when shot.
Torque’s pillars raise and lower all the time.
The open area on Eden has dynamic cover.