Ancra is home to a huge set of ruins, left behind by a desert-dwelling people when the earthquake that separated Ancra from Aurora Island occurred. During Moo's takeover, Pixie occupied the castle atop the hill that used to belong to the Ancran nobility, and forced the people that she had enslaved from North Town to work on excavating the ruins. Their goal was to unearth anything that could help Moo's efforts in his reign, especially mystery discs.
The ruins are known to be unstable, and Pixie nearly kills herself when she shoots down one of the temple supports.