Los Nevados National Natural Park

The air up here is thin and cold, and it tastes faintly of wet earth. Underfoot, the ground is soft and spongy, like a mattress soaked in rain. Mist drifts across the slope in slow sheets, and then it opens. For a moment you see grey ridges, dark volcanic sand, and silver plants standing in the fog like quiet figures. Welcome to Los Nevados National Natural Park, high in the Central Andes of Colombia.

The name says almost everything. In Colombian Spanish, a nevado is a snow-capped peak. This protected area stretches along the spine of the Central Cordillera, the middle of Colombia's three Andean mountain chains. It reaches across four departments: Caldas, Risaralda, Quindío and Tolima. Many visitors arrive from Manizales, the capital of Caldas, which sits on a ridge below. In just a few hours, the road climbs from coffee country into a world of ash, ice and cloud.

The park is built around a chain of volcanoes. The best known is Nevado del Ruiz, the highest and most active, with a summit above five thousand metres. Nearby rise Nevado de Santa Isabel and the tall cone of Nevado del Tolima. Smaller peaks, such as El Cisne and Santa Rosa, fill in the line between them. Together they form a volcanic wall. Weather builds against it almost every afternoon.

Nevado del Ruiz carries a heavy memory. In November 1985, a fairly small eruption melted part of its ice cap. Meltwater mixed with ash and rock and became lahars — fast rivers of volcanic mud. These flows rushed down the valleys for hours. They buried the town of Armero, far below in Tolima, and more than twenty thousand people died. It is one of the deadliest volcanic disasters of the twentieth century.

That tragedy changed how Colombia watches its volcanoes. Today, scientists monitor Ruiz closely with seismic stations, gas sensors and cameras. The volcano still shows activity, and you may see a pale plume rising from the Arenas crater on a clear morning. Because of this, access to parts of the park can change at short notice. Some zones close when alert levels rise. It is a living mountain, not a museum piece.

Now look at the plants around you. Those tall, woolly rosettes with silver-green leaves are frailejones. They belong to a group of plants found almost only in the high Andes. Their leaves are covered in fine hairs. The hairs trap a thin layer of warm air and protect the plant from frost and strong sunlight. Dead leaves stay on the trunk and wrap it like a coat.

Here is something many visitors miss. Frailejones grow extremely slowly — often cited at around a centimetre a year. A plant that reaches your shoulder may be many decades old, perhaps older than you. So please stay on the paths. One careless step can crush a seedling that would have needed a lifetime to grow. These quiet figures in the mist are among the oldest residents of the mountain.

This landscape has a name: the páramo. It is a high-altitude grassland found above the cloud forest and below the snow, mostly in the northern Andes. It looks bare, but it does important work. The mosses, grasses and peaty soils act like a giant sponge. They catch water from fog and rain, then release it slowly into streams. Rivers that start in these highlands supply water to towns and farms far below.

That is the second surprise. Much of the water in the coffee region begins its journey right here. When you drink a glass of water in Manizales or Pereira, part of it may have passed through this páramo. The soft ground under your boots is a reservoir. Protecting it is one of the main reasons this park exists. It is a water landscape as much as a volcanic one.

The glaciers tell a harder story. The white caps on these peaks are shrinking. Scientists have measured steady retreat over recent decades, linked to a warming climate. Older photographs show far more ice than you see today. Some smaller peaks in this range have already lost their permanent snow. If you see ice on Santa Isabel or Tolima, you are looking at something that may not last.

The mountains also have older names. Many people say that the Indigenous peoples of the region called Nevado del Ruiz Kumanday, often translated as the white nose. You will hear this name in Manizales on shops, hotels and events. It is a reminder that people lived in these valleys long before the Spanish arrived. They knew these peaks as neighbours, not only as scenery.

Life up here is quiet but present. Look and listen for small birds moving between the frailejones, and hummingbirds visiting high-altitude flowers. In the lower parts of the park, lagoons such as Laguna del Otún hold cold, dark water between the hills. Clouds shift constantly. One minute the light is flat and grey, the next it turns gold across a slope of red and black volcanic rock.

The altitude is the real challenge. At these heights, even a slow walk can leave you short of breath. Move slowly, drink plenty of water, and listen to your body. A headache or dizziness is a signal to rest or descend. Visits here are usually made with authorised guides, who know the rules, the routes and the current volcanic conditions.

Before you go, stop for a moment. Feel the cold on your face and the soft ground under your feet. Listen to the wind moving through the grass, and to the silence behind it. Watch the mist cross the frailejones once more. As you walk back, remember that this thin, wet, quiet place holds fire beneath it, ice above it, and the water of a whole region in its soil.