At one point, a Matoran and an Order of Mata Nui agent were able to invaded the fortress and kill Makuta Tridax using a protosteel-eating virus on the Makuta, and a staff capable of incinerating Antidermis. The fortress was destroyed twice in it's history, first during the Great Cataclysm and the Earthquake it caused, and finally during an attack on Destral by The Order of Mata Nui.