Unlike other California ghost towns, Eagle Mountain never truly died. Courtesy of FilmPalmSprings.comFormerly a company town for Kaiser Steel, Eagle Mountain provided a palm tree-studded oasis for some 4,000 residents. Eagle Mountain rose from the arid brush at the end of the 1940s to thrive for a generation or two. Silas Valentino/SFGATE Silas Valentino/SFGATE The entrance into the desert ghost town Eagle Mountain, Calif., near Joshua Tree National Park, is seen in April. Courtesy of FilmPalmSprings.com Courtesy of FilmPalmSprings.com Eagle Mountain, Calif., is scouted for Christopher Nolan’s “Tenet.” The film’s climax was shot in the desert ghost town.