Fortaleza Burradurica was a fortaleza established on continent Karalla by the city-state of Gerrares during the Tugali wave of colonialism during the Median Era. Burradurica was the last of the fortalezas to be created, and was soon overrun by Tugali raiders after the Tugali War of Unification severed Burradurica's connection with its home state.
Burradurica was garrisoned by these pirates until Undra Aeruma noticed it and ordered troops to capture the fortaleza. Burradurica was then razed, and Cielu Castle (along with the city of Nova Cielos) was built on Burradurica's ruins.