Indigenous people of the San Bernardino Valley and Mountains were collectively identified by Spanish explorers in the 19th century as Serrano, a term meaning highlander. Serrano living near what is now Big Bear Lake were called Yuhaviatam, or "People of the Pines". In 1866, to clear the way for settlers and gold miners, state militia conducted a 32-day campaign slaughtering men, women, and children. Yuhaviatam leader Santos Manuel guided his people from their ancient homeland to a village site in the San Bernardino foothills. The United States government in 1891 established it as a tribal reservation and named it after Santos Manuel.