We spent the family holidays in Andalucia, Spain where figs grow all over in the wild. My sons and I collected two different species, a green and a purple fig. Both were absolutely marvellous, the best figs we ever ate: crunchy, sweet and very fig like and they just grow there, uncultivated.
Any idea which kinds they are?      

That green one could be a strain of Verdal.

Check the photos on this spanish website that has lots of spanish varieties:
http://www.galgoni.com/

Beautiful!  Would love to have been at the fig fest with you...lol 

They sell the Verdal variety at the Mercadona market, we bought a few kilos, it's actually a dark fig they sell. The same at the local markets, great figs. Price at the markets is about 2Euro a kilo.