One of the man huge windmills along Altamont Pass east of San Francisco. "At this point they came in sight of thirty forty windmills that there are on plain, and as soon as Don Quixote saw them he said to his squire, "Fortune is arranging matters for us better than we could have shaped our desires ourselves, for look there, friend Sancho Panza, where thirty or more monstrous giants present themselves, all of whom I mean to engage in battle and slay, and with whose spoils we shall begin to make our fortunes; for this is righteous warfare, and it is God's good service to sweep so evil a breed from off the face of the earth." "What giants?" said Sancho Panza. "Those thou seest there," answered his master, "with the long arms, and some have them nearly two leagues long." "Look, your worship," said Sancho; "what we see there are not giants but windmills, and what seem to be their arms are the sails that turned by the wind make the millstone go." * from "Don Quixote" by Miguel de Cervantes