Sentence:  Buried within the Mediterranean littoral are some seventy to ninety million tons of slag from ancient smelting, about a third of it concentrated in <WSD>Iberia</WSD>. This ceaseless industrial fueling caused the deforestation of an estimated fifty to seventy million acres of woodlands. 
Meaning of the word marked with <WSD> tags:  The region of Europe south of the Pyrenees, consisting of Andorra, Spain, Portugal, and Gibraltar.