Crawford and his colleagues spent about three years exploring the five-hectare archaeological dig site, called Huxi, which is situated in a flat basin about 100 metres above sea level. Their investigations were supported by other U of T Mississauga participants -- anthropology professor David Smith and graduate students Danial Kwan and Nattha Cheunwattana. They worked primarily in early spring, fall and winter in order to avoid the late-spring wet season and excruciatingly hot summer months. Digging 1.5 metres below the ground, the team also unearthed artifacts such as sophisticated pottery and stone tools, as well as animal bones, charcoal and other plant seeds.