Circa 1800 BC, the Norte Chico civilization began to decline, with more powerful centers appearing to the south and north along the coast, and to the east inside the belt of the Andes. Norte Chico's success at irrigation-based agriculture may have contributed to its being eclipsed. Anthropologist Professor Winifred Creamer of Northern Illinois University notes that "when this civilization is in decline, we begin to find extensive canals farther north. People were moving to more fertile ground and taking their knowledge of irrigation with them". It would be a thousand years before the rise of the next great Peruvian culture, the Chavín.