Mt. Lemmon 250-million-year-old rock 9157-foot Hohokam sites from 1200 years ago have been found in the Santa Catalina Mountains. Later, the area was frequented by the Tohono O’odham and Apache. 1870s and 1880s Soldier Camp, was used during campaigns against Apaches In 1881 Sara Lemmon, age 45 Thanks largely to her efforts over 10 years, [...]