Everything here seems to be designed by an architect. Using the collective free will of the ants, an impressive and rarely seen structure has been built. This construction is very complex and it is the equivalent of building the Great Wall of China. The whole thing covers 538 square feet in width and 36 feet in depth, 40 tons of soil being moved around.
Now that is a wow! It is still a mystery how these ants can coordinate themselves so well, work so hard and follow their purpose in nature without a distraction, like they are a real army.