Lake Avenue travels from South Pasadena northward to Altadena and comes to an end when it meets Loma Alta Street and the foothills. Behind these gates, which anyone can walk around, are mountain trails. Legend has it that the Marx Bro. (Groucho, Harpo, Chico and Zeppo) once owned a home here. All that remains now is a stone foundation. I’ve walked the trails many times up to Mt. Lowe, which looks out over the San Gabriel Valley and beyond to Los Angeles.