Trade winds from the northern hemisphere define nearly everything about this landscape. They push deep Caribbean waters upward along the western coast, creating nutrient-rich upwelling zones that make these waters some of the most biologically productive in the region. But those same winds strip moisture from the land, leaving the northern reaches parched and wind-scoured. The Sierra Nevada de Santa Marta -- rising to over 5,700 meters just south of the peninsula -- acts as an enormous barrier, wringing rain from passing clouds and feeding the Rancheria River, the only significant waterway in the entire region. In the far north, the small Macuira mountain range, reaching 900 meters above sea level, traps enough trade-wind moisture to generate mist forests -- an almost surreal pocket of greenery surrounded by desert. Most of this range is protected as the National Natural Park of Macuira. Nearby, the 80-square-kilometer Flamingos Fauna and Flora Sanctuary shelters the wading birds that give it its name.

The Wayuu people are the peninsula's most enduring presence. Members of this indigenous group -- the largest in Colombia -- use the arid plains to raise cattle, sheep, goats, and horses, a pastoral life that stretches back centuries. The word Guajiro itself became associated with goat herders; Spanish colonists adopted the term for every indigenous group on the peninsula who kept herds. According to the historian Oliver, the name did not appear in Spanish records until 1626, in a document by the friar Pedro Simon. Descendants of Spanish colonists eventually settled the more fertile southeastern reaches, sometimes called Padilla Province, where proximity to the Cesar River basin allowed plantations of cotton and sorghum. But the Wayuu held the vast, dry north -- and hold it still. In the 21st century, the Colombian government no longer requires Catholic education for indigenous communities. Wayuu children can now be educated in their own traditions and in Wayuunaiki, their native language.

Since the 1980s, the central peninsula has been transformed by industrial extraction. The Cerrejon coal mine -- one of the largest open-pit coal operations in the world -- dominates the interior, while natural gas exploration and offshore oil drilling have reshaped the coastal economy. These industries brought infrastructure, employment, and controversy to a region that had largely existed outside the reach of the modern Colombian state. The southeastern lowlands, with their fertile soils and river access, developed along more traditional agricultural lines: cattle ranching, cotton, and sorghum. Along the coast, the headland and village of Cabo de la Vela draws ecotourists to a windswept landscape sacred to the Wayuu, offering a counterpoint to the extraction economy. The peninsula's wealth, in other words, comes in sharply different currencies -- fossil fuels and flamingos, coal seams and sacred ground.

Capuchin friars arrived in the 1880s to missionize the Guajira, and by 1905 Pope Pius X had elevated their effort into a vicariate apostolic. Attanasio Maria Vincenzo Soler-Royo was appointed titular Bishop of Citharizum in 1907 to oversee the work. The Capuchins established three major orphanages where Wayuu children were educated in Catholicism, Spanish, and European customs -- a pattern of forced cultural assimilation familiar across the Americas. Early 20th-century missionary accounts described the Wayuu as "tall and well made" and "formerly very intractable," language that reveals more about colonial attitudes than about the people themselves. The Capuchins claimed to have converted large numbers, though the Wayuu's enduring cultural identity suggests a more complicated reality. Today, the dynamic has shifted. Indigenous communities are no longer required to submit to Catholic instruction, and Wayuu language and traditions are recognized as legitimate foundations for education.