Early religious life
Early religious phenomena can only be deduced from archaeological remains. Numerous clay figurines found in tombs afford little evidence of religious beliefs during the agricultural Pre-Classic periods of Zacatenco and Ticomán (roughly 1500 to the 1st century bce). It is possible, however, that terra-cotta statuettes of women were meant to represent an agricultural deity, a goddess of the crops. Two-headed figurines found at Tlatilco, a site of the late Pre-Classic, may portray a supernatural being. Clay idols of a fire god in the form of an old man with an incense burner on his back date from the same period.
The first stone monument on the Mexican plateau is the pyramid of Cuicuilco, near Mexico City. In fact, it is rather a truncated cone, with a stone core; the rest is made of sun-dried brick with a stone facing. It shows the main features of the Mexican pyramids as they were developed in later times. It was doubtless a religious monument, crowned by a temple built on the terminal platform and surrounded with tombs. The building of such a structure obviously required a protracted and organized effort under the command of the priests.
The final phase of the Pre-Classic cultures of the central highland forms a transition from the village to the city, from rural to urban life. This was a far-reaching social and intellectual revolution, bringing about new religious ideas together with new art forms and theocratic regimes. It is significant that Olmec statuettes have been found at Tlatilco with late Pre-Classic material.