A tiny (approx. 7.5cm / 3 in) diameter gravel crater nest of Pheidole creightoni, in central Washington state. Arrow indicates nest entrance. Note chaff (discarded seed debris), mixed with Pogonomyrmex salinus parts/carcasses near entrance, and edges of nest. [NW of Mattawa [Grant Co], WA USA [el. 152 m / 500 ft]

Pheidole creightoni nest