(RawStory) - Argentina has built up a world-class wine industry, luring a flood of wine tourists, but boosting the quality quotient is still keeping its winemakers hard at work. The century-old industry, with its heart in the Mendoza area in the southwest, has increased volume by leaps and bounds in the past two decades, with Argentina’s malbec-based reds drawing raves worldwide. “In the broad scheme of everything going on with wine around the world, we have a long way to go,” said Martin Castro, who runs a vineyard in the Valle de Uco area in Mendoza, a parched and sunny province abutting the soaring Andes that grows its grapes with a huge irrigation network fed by mountain water.