This video from the Science Channel shows scientists filling a massive ant colony with 10 tons of cement and then digging the dirt away to reveal the incredibly complex system of ventilation and cooling created by the worker ants.

The enormous structure covers over 538 square feet and travels 26 feet into the earth. To create this colossal city, the ants would have moved over 30 tons of soil to the surface. The human equivalent of this task amounts to billions of half-mile-long trips, with each load weighing four times the ant's own body weight.

Now that's hard work!