A colony of 250,000 ants call the average anthill home — here's what inside their mound

When you look at a fire ant hill — or mound as it’s properly called — you’re actually seeing just the top of an enormous underground structure: the ant’s nest. Inside, a vast network of tunnels and chambers plunge up to 2 meters into the soil. Ants ferry their young up and down these tunnels to keep them at the best temperature to grow.