SiN Easter Egg - Woman Praying to Ritual

In the level 'BioMech Factory' there is a cool egg, but its hard for me to describe.

There is a room, a curving room with lots of gun turrets that fire at you. There are no guards in the room but there are little boxes on trolleys that come out of little square holes in one wall, travel along a track on the floor and enter into a similar hole in the opposite wall. There are two or three of these in the room.

Assuming its the first time you enter the room, look to the wall on your left. The holes that the boxes are going into are tiny, but there is one (I think the middle one) which if you crouch down you can crawl into.

Use glow sticks to light your way and go inside. There you will find a little cavern with a fire burning. A lady is kneeling and bowing before a giant book that says RITUAL on the front (The name of the game developers.) Wierd!