Long before the Spanish, the Quebrada was home to the Omaguaca, one of the principal cultures of these highlands. The region had already been inhabited for thousands of years and absorbed into the Inca Empire when European caravans first came through. The town that grew here kept the old name even as everything around it changed. Today that heritage surfaces most vividly at Carnival - eight days of color and noise, when groups called comparsas fill the streets with masks, costumes, music, food, and traditional drink. It is not a performance staged for visitors. It is the town remembering, loudly, who it has always been.

Humahuaca owes its existence to a long, hard road. The Quebrada de Humahuaca was among the first parts of Argentina the Spanish explored and settled, because it connected the temperate south - Salta, Córdoba, with their food and pack animals - to the great mining centers of Upper Peru. Silver from Potosí, gold from Oruro, all of it moved along this corridor, and Humahuaca was the last comfortable stop before the brutal climb onto the Altiplano. Mule trains paused here to rest. Later the railway came, linking Bolivia to Buenos Aires, and the town became a station on that line. The trains are gone now, but the sense of a waypoint remains - somewhere you stop before the hard part begins.

Climb the stone steps that rise from the plaza and you meet him: the towering central figure of the Monument to the Heroes of Independence, a nine-meter indigenous man cast in bronze, one arm raised. The sculptor Ernesto Soto Avendaño completed the monument, inaugurated in 1950, to honor the fighters of the wars of independence - the Army of the North and the militias of gauchos and native people who defended these mountains under General Martín Miguel de Güemes in the long guerrilla campaign known as the Guerra Gaucha. Humahuaca was a center of that revolutionary activity. The monument does not depict a general on horseback. It raises up the ordinary highland people who did the fighting and the dying.

The heart of town is a tidy colonial grid of whitewashed walls, anchored by a church on the main square that now serves as a cathedral. The streets are small enough that walking is the only transport anyone needs. Step beyond the plaza and the desert reasserts itself immediately - acres of cardón cactus, the candelabra giants of the Andes, and slopes banded in mineral color. The aridity is no accident: the surrounding mountains wring the moisture out of passing clouds, leaving the valley parched and the air startlingly clear. A daily handicrafts market spills down the steps below the monument, selling weavings and silver familiar to anyone who has traveled the central Andes.

Humahuaca makes a natural base for the wonders strung along the canyon. Just north lies the village of Uquía, with its remarkable colonial church. South sit Tilcara, crowned by the Omaguaca fortress of the Pucará, and Purmamarca beneath its Hill of Seven Colors. And to the east winds the road to Iruya, a knuckle-whitening mountain route that ranks among the most spectacular drives in all of Argentina. From a quiet, dusty plaza at nearly three thousand meters, the most extraordinary landscapes in the country are only a bus ride away.