In my search for a good map of the Pine Barrens, I came across this excellent article which discusses how water formed under the Pine Barrens and what it means today, how fire helps regulate the ecology of the Pine Barrens, the plant and animal life of the Pine Barrens, and the different vegetation types and geology. Not cold scientific facts, the article also interprets the area as would an artist.
http://www.enature.com/habitats/show_sublifezone.asp?sublifezoneID=15
http://www.enature.com/habitats/show_sublifezone.asp?sublifezoneID=15