The Geonosian eastern barrier Fortress was a massive Geonosian defensive position located on Geonosis. It was one of the primary defensive positions of the Geonosian army, guarding the Geonosis droid foundries.
After the First Battle of Geonosis the Geonosian army constructed the Fortress with the aid of the Confederacy of Independent Systems. The Fortress was equipped with several blaster emplacements and several units of B1 battle droids, B2 super battle droids and Droidekas. During the Second Battle of Geonosis the Fortress was one of the most important Geonosian defensive positions, guarding the Primary Droid Foundries of Poggle the Lesser. The Fortress and its' units saw combat when Anakin Skywalker and Ahsoka Tano needed to get trough the Easter barrier to the landing positions. The Fortress was blown up during the battle.