Vertosols are the main soil type on which cotton is grown in Australia. Eighty percent of irrigated cotton is grown in retained hill. However, from time to time the hills may need realignment which requires knocking dawn the old hills and fanning new furrows and hills. As a result, new hills can be relocated over old wheel tracks, causing a compacted zone beneath the hill in the root zone, thus impeding root growth. The very nature of the Vertosols lends themselves to self repair under repeated wet/dry .cycle. An attempt has been made in this study to investigate the effect of wet/dry cycles in repairing the structure of a compacted Vertosol from a commercial cotton farm in the Darling Downs of Queensland