Has anyone found that easter egg on Midnight.

I heard that the other two easter eggs had been found and I managed to complete them. But I was just wondering what the midnight easter egg might be, the clue was:

What is it: A congenial site.

Where is it: lost in the belly of the beast.

Something about moving 2 boxes into a place marked by orange shaped markings on the ground/wall, I saw it, you melee them into position. I think you need the gravity hammer to smash them or something. All i know is a chime is heard when you put those boxes into position. i still don’t know what the easter egg is.

I heard about that too.

What is the location of these orange markings?