Yes, me and night did do this. I took a
film clip which should be rendered soon of how to get in. You can destroy the core, but nothing happens. You can't ride the turrets, and there are 3 grunts on board. If you climb into a niche behind the core you can break past the barrier. Then you are out of the map and free to roam...
But. There is a 10 second countdown so you can only manage to sprint down to the ground and chill for about a second. I used this in theater to explore, and I have tons of stuff to show you guys. Sadly, only two pictures have showed up in my recent screenshots, so i'll have to tell you what I saw.
There are mini vehicles, that are poorly textured as not to take up space. They are cute and like like plushies
.
One scarab ends up driving through the ground.
The mini plush scarabs are more detailed then the rest of the vehicles
Out where you find Keyes there is a stone mountain with a flat 3x1 (ish) block connecting to it. When i tried to get close I was teleported under my character and then could not get back into free pan.
More will come once my pictures show up.
Here are two picture of me and night in the scarab:
