Locked room on the Rig, here:
https://imgur.com/PJloKLg
A scan patrol mentioning a corrupted terminal leads here. There's about a thousand of the egg markers scattered around the instance. Looked but couldn't find them all. If you follow the room all the way to the end you walk into a four-way corridor with three of the doors locked. One you enter through, two are blocked, one comes up with 'Locked' and a cue for your action button. Don't know if anyone will see this post since it's been like two years since the OP opened the thread but it's exciting.
No guess as to what's there. Hopefully me and a couple friends can check it out this weekend at some point where it's not three in the morning.
Think it turned out to be tied to an exotic quest. Why you can damage the treasure stones and stuff still I don't know and now Titan's sleeping beneath the world. I guess it stays a mystery.