On July 14, 1769, an expedition led by Don Gaspar de Portola left San Diego to rediscover Vizcaino's "Lost Port of Monterey." The party reached but failed to recognize Monterey Bay, traveled north, and discovered San Francisco Bay on November 4, 1769. Among its members was Fray Juan Crespi, O.F.M., whose diary records that on October 10, 1769, after crossing a river the soldiers named Rio de Pajaro and heading northwest, the expedition halted near a little lagoon because of the condition of sick men in litters. There the plains and low hills were forested with very high trees of a red color unknown to them, unlike cedar though resembling cedar in color and very brittle, so they named them palo colorado. At the little lagoon, now known as Pinto Lake, the California redwood was first discovered by a European.