Aluminum Fire Ant Colony Cast #072 - Closeup 1 Picture.
This is a close up picture of the chambers at the upper part of the cast (the deeper part of the colony as it is in the ground). Most of the fire ant colony casts tend to have more wide flat chambers as the colony gets deeper. The other close up picture was taken closer to the base (the part of the colony near the ground surface) and you can see that there are mostly thin interconnected tunnels with no significant chambers there.