Trident Anti Tank Obstacle (Green Stuff World)Anti Tank Obstacles Obstacles that simulate reinforced concrete and steel to block and divide areas in different contexts. They are made of high quality resin, are textured, and are highly detailed to give a hyper realistic look to your project. Several European countries used trident anti tank obstacles during WWII to prevent armored forces from crossing the line of defense. They also blocked streets, protected sea entrances, and protected soldiers