In the fall of 1996, TxDOT-sponsored archeological investigations resulted in the discovery of a prehistoric site on a low floodplain mound along the banks of Cypress Creek in northwestern Harris County. Site 41HR796, later named Dimond Knoll, yielded the greatest density of prehistoric stone artifacts among any site recorded previously in the region.

Intensive archeological investigations at the site in 2012 also gave rise to one of the most successful public outreach efforts ever initiated by TxDOT's Archeological Studies Branch. This lecture explores the dynamic cultural and environmental factors that characterized the Houston area prior to the arrival of Europeans. The rich artifact record at Dimond Knoll sheds new light on the prehistoric heritage of the Houston area, providing evidence for recurring visitation by mobile foraging groups spanning a period of more than 10 millennia.