Last week Erinn and I spent an afternoon trying to navigate the miles of unmarked trails that make up Griffith Park in northeast L.A., home to the “Hollywood” sign and Griffith Observatory, made famous in the climactic final scene of James Dean’s “Rebel Without a Cause.” Difficult to do, even with a map. But we made it back before dark (barely). Despite the sprawl of the city, one of the things we’re both loving about this town is the integration of urban and natural areas, such as the beaches, La Brea Tar Pits and Griffith Park, with its more than 53 miles of hilly hiking trails. Plenty to do!