La Rinconada: The Gold-Mining Town at 5,100 Meters

La Rinconada sits at approximately 5,100 meters in the Peruvian Andes, precariously clinging to the slopes beneath the Ananea glacier. It is a dense settlement of corrugated-metal roofs, freezing mud, and open sewers, entirely devoid of a conventional municipal running-water system or garbage disposal. Temperatures routinely plunge below freezing, and each breath provides roughly half as much oxygen as it would at sea level. Yet, this inhospitable landscape is home to tens of thousands of people.

La Rinconada's economy revolves overwhelmingly around gold mining, much of it operating within Peru's complex informal and partially formalized mining sector. Men tunnel into the mineral-rich rock beneath the glacier using pneumatic drills and explosives. The environment is intensely claustrophobic; the shafts are dangerous, and fatal accidents have been documented. The silence of the high Andes is perpetually broken by the grinding of ore crushers.

Is La Rinconada Really the World's Highest City?

Internet lore frequently labels La Rinconada as the "highest city in the world." However, the label "city" is less precise because definitions of what constitutes a city vary. NASA uses the more precise description "highest permanent settlement." The distinction is important: it did not begin as a planned urban center. It developed from a temporary mining settlement whose population expanded rapidly as gold prices rose.

Why a Town Exists Here at All

The existence of La Rinconada is directly tied to the global demand for gold. Decades ago, La Rinconada was a small, temporary mining settlement. But as gold prices surged and other economic opportunities remained limited, migration accelerated. A massive influx of laborers arrived seeking their fortune, leading to a rapid, unplanned settlement where infrastructure was completely unable to keep up with the booming population.

How Cachorreo Actually Works

The economic engine of La Rinconada relies heavily on a deeply entrenched labor arrangement known as cachorreo. In its most widely reported form, miners work in the shafts for a set period without receiving a formal wage. Instead, their compensation is the opportunity to extract and keep as much ore as they can carry out for themselves during a designated timeframe.

Reports often describe cachorreo through a simple monthly formula, but documented arrangements have varied by mine, operator, and period. The reasons miners participate are more complicated than simple coercion. Potentially valuable ore, limited employment alternatives, established mining practices, and individual economic calculations all shape participation. But the arrangement also transfers much of the uncertainty of extraction from mine operators to workers.

Pallaqueras: Women Working Outside the Mine

At La Rinconada, beliefs surrounding the mine have traditionally helped reinforce a gendered division of labor. A prevalent local belief holds that the mountain will become jealous if women enter the shafts, potentially causing the gold veins to disappear. Consequently, very few women work inside the underground mines.

Instead, many women work on the freezing slopes outside as pallaqueras. They spend their days scavenging through the discarded tailings dumped by the men, using small hammers to break open rocks in search of overlooked gold flakes. Exposed to biting winds and freezing temperatures, the pallaqueras face severe cold exposure and exhausting physical labor on the rocky mountainside.

Belief Underground and Mining Rituals

Survival in such a precarious environment fosters intense ritual practices. Miners do not rely on geology alone; they actively negotiate with the spirits of the mountain. Miners have been documented making offerings of coca leaves and alcohol and praying to the mountain for protection and success before entering the mine.

Such offerings form part of the ritual life surrounding dangerous underground work, expressing requests for protection, permission, and success.

Living at 5,100 Meters

Existing permanently at 5,100 meters places the human body at an extraordinary physiological frontier. The extreme altitude forces the cardiovascular and respiratory systems to work constantly to compensate for the lack of oxygen. Recent physiological studies conducted on the permanent residents of La Rinconada provide unusual insight into the effects of permanent residence at this altitude. For instance, a recent study of 330 highlanders living in La Rinconada found that 200 participants—about 61%—reported experiencing headaches. Participants with headaches also showed lower blood-oxygen saturation and higher clinical scores for chronic mountain sickness, although headache was not significantly associated with excessive erythrocytosis in the study.

Mercury and the Cost of Gold

Extracting the gold from the rock requires a chemical process that has severely contaminated the local watershed. Miners use mercury to bind the gold flakes into amalgams. These amalgams are then burned, vaporizing the mercury and leaving the solid gold behind. While mercury exposure is known to damage the human nervous system over time, environmental measurements demonstrate the severity of local contamination.

A study published in 2020, based on samples collected from the Lunar de Oro stream near La Rinconada in 2014 and 2015, found staggering levels of contamination. Researchers documented mercury concentrations ranging from 9 to 373 mg/kg in the sediments. Every sediment sample exceeded the environmental guideline thresholds used in the study, leading scientists to classify the area as extremely contaminated.

Water, Waste, and Infrastructure

Because La Rinconada lacks a conventional municipal running-water system, securing reliable access to safe drinking water is a major, daily challenge for residents. The absence of a formal sewage network and comprehensive garbage collection has contributed to waste accumulation and serious sanitation problems across the settlement.

What Stories About La Rinconada Often Get Wrong

Sensationalist accounts often miss the complex realities of the settlement. La Rinconada is better understood as a permanent settlement rather than a formally planned city. Its notorious cachorreo labor system is not a universal "31-day lottery," but a variable labor arrangement whose terms differ by operator and period. Informal mining is not always strictly illegal mining, as many miners navigate a slow, complex formalization process. Women are not merely excluded by superstition, but actively participate in the economy as pallaqueras. And the environmental devastation from mercury is not just a rumor, but a documented crisis with severe implications for the region's watershed.