 The Kumeyaay lived in this region for over 10,000 years as hunter-gatherers and horticulturists.The boundaries of the Kumeyaay lands once extended from the Pacific Ocean, south to Ensenada, Baja California, east into the Imperial Valley and north to Warner Springs.Western exploration of the Californias dates back to the 16th century when in 1535 Hernán Cortés first visited the Baja California Peninsula in his search for Calafia.