This is an interesting map of Port Hudson and it's surroundings, showing the nature of the terrain. It is not very accurate in its depiction of the earthworks, and has other errors. The area identified as East Baton Rouge Parish is actually West Baton Rouge Parish, and East Feliciana Parish does not actually extend as far south as shown. It does have a few notable features. Notice the river batteries and their fields of fire, and also the property boundaries and owner's names of the plantations lining the river. (Map from National Park Service history lesson plan on Port Hudson)