I was just in Spain, and was told that prior to the financial crisis much of the olive oil produced in Italy and Greece was made from olives grown in Spain. (Spain is a massive producer of olives.) After the crisis they stopped exporting olives and started bottling their own oil, which was the cause of the shortage in supply of extra virgin oil from e.g. Italy that led to organised crime getting into the fake olive oil business. So there's every reason to think that Spain in particular is awash in genuine olive oil.