By David Allan, CNN Los Angeles (CNN) — Griffith Park is a massive, mountainous, wild oasis in the middle of the dense urban sprawl characterizing much of this fabled city. Yet its identity is still very LA — fun, sunny and it’s been in enough films and television series that were it a person it would have its own star on the nearby Hollywood Walk of Fame. At 4,210 acres, Griffith outshines other extraordinary city parks of the US, such as San F…