Adventure Moon: Klyron

From the introduction: Ruined home to a long-dead civilization, Klyron is one of the fabled Million Moons of Manza. Its harsh desert environment is the tragic result of a devastating civil war fought for reasons forgotten by the last generations in the fight. Old tales tell of buried city ruins, preserved under sand and filled with all manner of wondrous ancient relics. The same legends also warn of terrifying war machines still scouring the surface in search of a release for their eternal bloodlust.