1950 Map of Theba

Further south, the terrain shifts from the irrigated plains to the stark volcanic formations of the Sauceda Mountains and the White Hills. This southern portion is largely occupied by the Williams Military Reservation, creating a sharp contrast between the developed river valley and the desert interior. Genealogists and local historians can trace specific water resources like Salt Well and the abandoned pumping station, marking the challenges of maintaining ranching life in the Maricopa desert.