Pogonomyrmex californicus (California Harvester Ant)

Another Pogonomyrmex californicus nest, with a lens cap next to it for scale. This is a small nest. Again, note the asymmetry - almost all of the soil is excavated to one side.
Another Pogonomyrmex californicus nest, with a lens cap next to it for scale. This is a small nest. Again, note the asymmetry - almost all of the soil is excavated to one side.