Geological / environmental event
The various ravines, caverns, and chasms that make up the region of northern Aeniya are slowly formed.
While under controlled surveillance and experimentation conducted by Arthuria on the northern-most part of Aeniya, Calamitie, slowly throughout the years, shaped the large chasms, cave systems, and ravines that make up the region of Cavaero in present day. Arthuria's experimentation of Calamitie still continues even after this initial one ended.