Due to the data it was shown there was originally a sheet of energy cloaking the underground, but with Raionhatō touch it sent a ripple and caused the sheet to dissipate. Revealing a large mirror Mage that connects to several large rooms in and around the maze. One was a spherical room with a platform extending into it (like from x-men) a atrium, resting area, and among other things. The larger rooms on the outside include what looks like an church complex, greenery, armory, laboratory, and a library. From the look of the circuitry the mirrors was suppose to rotate but Raionhatō much had turn them off somehow. There are also signs of defense systems on the surface and in the maze but no power is present as if it was turned off. Regarding relics there is strange energy readings in the atrium, sphere room, armory, church complex, and the library. The Eteruans were impress the Diyel were able to take such amazing scans as they can't even pick any of that up on their scans.