Maremma is an area southern of Tuscany. It embraces the coast south of Leghorn and goes in land Grosseto and down including Civitavecchia. It's a vast territory and part of it is rural and mostly untouched. It also keeps Etruscan and Roman remains and embraces medieval towns as beautiful as Massa Marittima or enchanting coasts as Argentario or thermal baths as in Saturnia.
Yes, pine trees are an irreplaceable part of Maremma panorama and it wasn't by chance that pine seeds from this area are considered the best ones all over the world for recipes. Indeed a land which was mostly marsh-land once drained turned to be a generous one plenty offering good wines, olive oil, excellent dop pecorino cheeses, growing maremmano horses, maremmana cow buffaloes with their enormous hornes and cultivating also tasty strawberries and very many vegetables in more recent times.
Large areas left wild are also part of Maremma, places where the Mediterranean vegetation is so dense where only boars feel at easy and can run through.
Neverthless Maremma is also a beautiful part of Tuscany coast where natural wildlife oasis are or ancient villages.