The introduction of cattle, sheep, and goats revolutionizes farming in the Durpar region. Herds are semi-nomadic, driving their animals between seasonal pastures. By -35,000 DR, the desertification of Durpar begins perhaps in part because of overgrazing. The herders respond by migrating northwest from The Goldenwater to a region of semi-arid savanna they name Okoth. In Okoth, south of modern-day Mulhorand, the sarrukh (a saurian creator race) found their first permanent settlements. Early sarrukh villages are dominated by temple complexes dedicated to the worship of the World Serpent. Most sarrukh settlements of this period have a population of between two and eight thousand people, though Daar Mundigak itself, the largest city in Okoth, has over ten thousand. Within a hundred years, most of Faerûn is theirs.