The ceremony begins with all the participants male and female in a large circle to perform the tobacco ritual. After the smoking ceremony is performed the men and the women separate. The men remain at the main ceremonial site and the women withdraw to another place to perform the women's ritual.
The women's ritual begins with all the women sitting together in a circle including the woman who is playing the role of Ata Bey. A container is passed around the circle clock-wise along with a pair of scissors. Each woman clips off a tiny bit of her hair or fingernail and places it in the container. Then the container is passed to the beike and she adds tabonuko incence (copal) and sacred herbs. The whole mixture is burned ceremonially. This represents the sacrifice that Ata-Bey offers every year at harvest time when her son dies in the form of the harvested plants to feed the people.
After the sacrifice is burned thoroughly the ashes are mixed with a bit of oil to create a kind of black paste and used as paint face paint. This container of black face paint is passed around the circle along with another container holding red or orange face paint made of annatte seeds (achiote) or (bija). The combination of red and black face paint are used by each individual woman to create her own personal spirit design on her face.
When all the women have painted their faces the woman who plays the role of Ata-Bey stands and is led to the middle of the circle where she sits.
A rig is prepared beforehand and attatched to the ceiling or the branch of a tree. This rig should be a wide loop or ring of some kind that can allow a fairly wide rope to be run through it. The most important aspect of this part of the ceremony is the creation of a long snake-like structure made out of ropes. This is achieved by hanging one end of the rope through the loop rigging and allowing the other end to trail down in a big handfull of strands that will then be taken individually by the women participants.
Each woman takes the end of one of the ropes. The end of each rope is coiled around a stick to create a large rope bundle which the woman holds in her hand. Then all the participants form a large circle atound the woman that has been chosen to represent Ata-Bey. The beike takes the other end of the rope assemblage and pulls gently against the pull of the participants to keep all the ropes taut. At this point the Boa costrictor dance chant begins and the participants begin to dance around the Ata-Bey woman.