The piece of pottery from a tomb shows the step fret wave motif that we know from the entire Pacific coast of America. Its exact meaning is not known. Interpretations range from Pacific waves crashing against the mountain range to the combination of field terraces and irrigation. On this vessel, in which the corn beer chicha was buried with the deceased, a sacrificial ritual is depicted. To the right and left of the stairs you can see priests officiating at the sacrifice. One is dressed as a lizard or iguana, the other only appears to be wearing a mouth mask in the form of predator teeth and a headdress made of big cat fur. His belt has the shape of a snake. On the wave and on the stairs there is one person each. Possibly this is the depiction of a human sacrifice ritual in which people were thrown down the Pacific rim to calm the Pacific Ocean or to ask for fertility. The Moche culture existed from about the beginning of the 3rd century A.D. to the 7th century A.D. on the north coast of Peru. In this section, which extends from the Huarmey valley to an area north of the city of Piura and covers about 600 km from north to south. There are some very wide river valleys running east-west, whose rivers only provide sufficient water for agriculture during the rainy season in the Andes. Therefore, the punctual start of the rainy season and sufficient rainfall was crucial for the survival of the people on the coast.