Ants Tunneling

For details of experiment, see Halfen, A.F., and Hasiotis, S.T., 2010, Neoichnological study of the traces and burrowing behaviors of the western harvester ant Pogonomyrmex occidentalis (Insecta, Hymenoptera, Formicidae); paleopedogenic and paleoecological implications PALAIOS, 25(11):703-720