It seems that in their labors the Rotelos were paranoid. No sooner did I descend the stasirs to try and get at the treasure they have sequestered here than I see the mighty cage come down. Seems I won't be getting the treasure of Nerotelos as easily as I had hoped.
However, it does not seem as though the treasure is locked from me forever. There looks to be three components of the lock, color-coded in a hue that matches each of the three major wings. It should be as simple as finding the necessary mechanisms to undo the constituent portions of the lock. I'll start with violet first.