I was running the Vault on hard last night, after killing the templar me and the team went down the spirit bloom chest path to gorgons. I was exploring and found a little gate inside a cave placed above your head before dropping through the purple Crystal path to gorgons. Needs a trigger to be activated, I'm sure. Any VOG conspiracy theorists interested in checking it out should add me and I'll send you screenshots. Edit: I do not know how to post the picture from my PSN capture gallery, thats why I have not posted a picture. Also because I only want to release this info to people serious about trying to figure out secrets instead of trying to steal credit for something I found.