Halo 3 - How do you get into this secret room?

[I2ed I3lood]

I looked at this picture, then I wondered... How the hell do you get here?

Pictures of room / features to support your idea of what I mean.
http://halo.wikia.com/wiki/Installation_01
http://halo.wikia.com/wiki/Installation_02
http://halo.wikia.com/wiki/Installation_03
http://halo.wikia.com/wiki/Installation_06
http://halo.wikia.com/wiki/Installation_07

Please post :
Level
Secret pathway / door war

- or -

Guide.

 

[Shaun M]

I think those are all just close ups of the rings in one of the last levels, i think called 'the covenant'?

It's the final room, it's not so special but the rings close up look pretty cool

Edit: Yes, it's definitely on The Covenant it says it on the bottom of the links you supplied