Ongoing droughts and an over-exploitation of land for both agriculture and industry have stoked fears in Spain over the creeping spread of "sterile soil" which could devastate Europe's kitchen garden. "There used to be a holm oak forest here.. but now the land is barren," says Gabriel del Barrio, pointing to a hill where only stunted shrubs remain. Wearing dusty trainers and with a canvas hat on his head, this specialist in desertification has been worriedly monitoring the daily degradation of the landscape in Almeria, in the southern Andalusia region, said AFP.