In the northern Rio Grande area black-on-white pottery died out to a great extent and was largely replaced by what we know as Biscuit Ware.[90] This name is derived from the resemblance of this pottery to china in the “biscuit stage” of manufacture. Biscuit ware is a thick pottery with a soft crumbly paste tempered with volcanic tuff. The background is a light gray or tan, and somewhat coarse designs are applied in black paint. Corrugated culinary ware was replaced by plain black pottery. In southeastern New Mexico, and extending into Texas, a distinctive ware made during this period is found. This has a brown slip. Bowl exteriors are undecorated, but the interiors have designs applied in red and black. Associated with it, is a plain brick-red ware. The story of the Spanish conquest of the Southwest, which was interrupted by a revolt of the Pueblos in 1680, is as dramatic a tale as history can produce. Although 1540 is the date usually given for the first meeting between the Pueblo Indians and the Spaniards, it was actually in 1539 that the first contact occurred. In that year a Franciscan monk, Fray Marcos de Niza, accompanied by a Moor named Esteban, started north from Mexico to investigate tales of large and wealthy cities which were rumored to lie in that direction. Esteban went on ahead, and, reaching what is now New Mexico, was slain by the Indians. Fray Marcos did not dare to proceed, but caught a glimpse of one of the pueblos of Zuñi from a distance, and returned with tales of great cities. [Illustration: Fig. 39—Biscuit ware from the Rio Grande area. Regressive-Pueblo period. (Courtesy School of American Research.)] In 1540 an expedition was organized under the leadership of Francisco Vasquez de Coronado to search for the fabulous “Seven Cities of Cibola” in the north. After a long and difficult journey the expedition reached Hawikuh, one of the Zuñi villages. The disappointment of the adventurers may well be imagined, for here was no city of gold, ready to yield its wealth to the invaders, but a community of simple farmers who, not only had no riches, but had little conception of the role that wealth could play in society. Later, Coronado moved his forces to Tiguex on the Rio Grande, another Pueblo town. Trouble soon developed, and the Indians were massacred. The Spaniards then moved on to the Pueblo of Pecos, and there followed an expedition into the Plains as the search continued for the fabulous and mythical golden cities. In 1542, Coronado and his men withdrew to New Spain, and the Pueblos were left in peace for forty years. After 1580, various expeditions entered the Pueblo domain, and in 1598 it became a part of the Spanish dominions. In 1609 the city of Santa Fe was founded.