The story
Welcome to the heart of the Valle de Uco. As you look around at the lush green rows of vines and the towering, snow-capped peaks of the Andes, you might find it hard to believe that you are actually standing in a high-altitude desert. If you listen closely, you’ll hear the constant, rhythmic rush of water flowing through the narrow stone and concrete channels alongside the road.
These are the acequias, and they are the lifeblood of Mendoza. Long before the world-famous Malbec was ever planted here, and centuries before the Spanish arrived, this landscape was the home of the Huarpe people. They were a resilient, ingenious community who looked at the dry, sun-baked earth of Tupungato and saw potential where others saw only dust.
They understood a fundamental truth about this land: the treasure isn't buried in the ground; it’s locked in the ice of the mountains above us. Look toward the horizon at the massive silhouette of the Tupungato Volcano, rising over twenty-one thousand feet. That peak serves as a giant water tower.
Every summer, the sun melts the glaciers and snowpacks, sending water cascading down the slopes. The Huarpe were master hydraulic engineers. Without modern surveying tools or metal machinery, they used the natural slope of the land to hand-dig hundreds of miles of irrigation canals.
They calculated gradients so precise that gravity alone could carry water from the mountain runoff all the way to their crops, miles away. As you walk near these channels today, you are tracing the exact paths laid down over five hundred years ago. The Huarpe called this water the "soul of the mountain."
When the Incas expanded into this region, they were so impressed by the Huarpe’s irrigation systems that they adopted and expanded them, rather than replacing them. Later, the Spanish followed suit, codifying the use of these canals into law. Today, these acequias define the local culture.
There is a sacred hierarchy to the water here; the "Toma de Agua" or the headworks of the canal is where the journey begins, and the "Regador" is the person tasked with opening the gates to flood the fields. In Tupungato, the water doesn't just grow grapes; it creates a microclimate that cools the air and allows the poplars and willow trees to thrive, providing the windbreaks that protect the delicate vines. Take a moment to watch the water.
It is cold, silty, and gray, carrying the minerals of the Andes directly into the soil. It is the reason this desert blooms. Every glass of wine produced in this valley is, in a very real sense, a tribute to the Huarpe engineers who first figured out how to make the mountains weep for the benefit of the valley.
As you continue your journey through the Valle de Uco, remember that under every green leaf is a story of ancient ingenuity that still flows today.