Glomborolum was an underwater city populated by merians deep below the Amberle Sea. It was here that Gorob created the Spire of Glomborolum to allow him to become the first of the Vernal Gods. It was completely wiped out by an attack from Illith, the Leviathan, but Gorob survived and traveled the Basin as Gorob d'Varsha, meaning Gorob the Teacher.
New Celest is built atop the ruins. (Visit "Before the Glomborolum" roomm#10164)