Individuals journeying from the Heart of Artorias utilize an oqa membrane to gain entry into the Dibrook Space Station. Oqa membranes functioned as conduits, employed by the Yuuzhan Vong to bridge the gap between two spacecraft in the void, facilitating transportation. These structures, analogous to cofferdams, were constructed using microbial mats. The designation "oqa membrane" originates from the term oqa.