About two meters long, and four meters wide, the mysterious Sayhuite monolith is an enormous rock containing more than 200 geometric and zoomorphic figures, including reptiles, frogs, and felines. Found at the top of a hill named Concacha, the stone was sculpted as a topographical hydraulic model, complete with terraces, ponds, rivers, tunnels, and irrigation channels. The functions or purposes of the stone are not known, but researchers believe the monolith was used as a scale model to design, develop, test, and document the water flow for public water projects, and to teach ancient engineers and technicians the concepts and practices required. The rock was "edited" several times, with new material, either altering the paths of the water or adding routes altogether.

While the creators remain a mystery, the monolith provides archaeologists with insight into the culture of the pre-Columbian population. Archaeologists have determined that the site was an Incan religious center, where rituals and ceremonies for the worship of water was conducted. The monolith is an important clue to this, since it depicts a water-like flow between the carvings. Modern-day engineers also speculate that the monolith is a depiction of the irrigation systems present within the Incan culture.