Is Ragol Earth?

[Forge]

Right, to add to Laziness' post-

The pillars on Ragol are the locks that close the door to the Ruins (which Rico tells us is a Spaceship - probably Noah from PSII) and must be activated in order to unlock the door to the Ruins. These may have been placed by the Espers in order to trap something within the spaceship.

Personally, I believe that IT was the Profound Darkness (which is then fought in PSO Ep3) but that Rico was infected by the main extention of it into this dimension - Dark Falz (who was first seen infecting the body of the Governer of Motavia).

And yes, but in all difficulty modes, Rico does say - "We've opened the forbidden door. We must defeat it now, before that thing revives with the perfect body." She also refers to Falz as the god of destruction that revives every 1000 years, and this is true, but it is merely an extention of the Profound Darkness.

Refer to the early series (PSI-IV, Gaiden and Adventure) for more explanation.