Ghar Stench Vent
The Ghar aren't the most hygienic creatures in the Antares universe, so to compensate when they live a prolonged amount of time in a closed environment, they have to have stench holes or vents, to literally, let all the stink out.
They can be found in any Ghar base, making them essential for those Ghar-ified battlfields and bases. Because of their frequent use, the Ghar had the forethought to reinforce the vent with a barricade at the ground base, making it a fortifiable structure.
Models supplied unassembled and unpainted