So while doing patrols and killing vex i found this little nook with a level 22 Minotaur which was weird to me because all the other enemies were level 12-13 so while walking through it i found the end of the area with 3 Minotaur's and a ton of vex near a what looks like nuclear reactor looking floor it seems like it could be like a limited type kinda mission thing can has anyone else seen this and can anyone tell me what is this