Complex sentence: The name "Big Sur" can also specifically refer to any of the small settlements in the region, including Posts, Lucia and Gorda; mail sent to most areas within the region must be addressed "Big Sur".
Split into simpler sentences: The name "Big Sur" is sometimes used to refer to any of the small settlements in the region, including Posts, Lucia and Gorda. Mail sent to most areas within the region must be addressed "Big Sur".