Narrator: At first glance, a fire ant hill — or mound ... So let's take a closer look at what's inside an anthill. The mound is really the top of an enormous underground structure: the nest.

and mysterious. This programme reveals the secret, underground world of the ant colony, in a way that’s never been seen before. At its heart is a massive, full-scale ant nest, specially designed ...

If you live in a rural or suburban area in the Southern states, you’ve likely seen a fire ant hill a few times in your life.