Often (incorrectly) called ant-hills, these mounds are unique in that the termites - with unexplained abilities - always build them in perfect alignment to north and south. These mounds are also architectural masterpieces with intricate tunnels, archways, bridges, nurseries for the newborn, chambers for the king and queen, and even a graveyard at the top. Large mounds can be several times the height of an adult human and contain tens (and sometimes hundreds) of thousands of termites. By comparison, the skyscrapers of our world seem a little less impressive.
The thin-skinned termites can only survive in temperatures that do not vary much from 86F (30C). The ingenious north-south construction of the mounds ensures that this temperature requirement is maintained. In the morning the western side is shaded, and in the afternoon the western side warms up while the eastern side cools.