Huascarán National Park

The Cordillera Blanca packs more than fifty peaks above 5,700 metres into a range roughly 180 kilometres long, which makes it the highest tropical mountain range in the world, and Huascarán National Park protects almost all of it. Huascarán itself reaches 6,768 metres, the highest point in Peru. What draws most visitors is not the summits but the lakes beneath them: glacial meltwater held in rock basins and coloured an improbable turquoise by suspended rock flour, of which Laguna 69 and Laguna Parón are the most photographed. The park also holds Puya raimondii, a bromeliad that grows for decades and then throws up a flower spike several metres tall once before dying. Everything here happens at altitude, and Huaraz sits above 3,000 metres before you start climbing.

What you actually see

• Laguna 69 - the classic day hike to a turquoise glacial lake beneath Chacraraju.
• Laguna Parón - a larger lake reached by road, framed by the pyramid of Artesonraju.
• The Santa Cruz trek - the best-known multi-day route through the range.
• Puya raimondii stands - giant bromeliads in the Huascarán and Pastoruri sectors.

When to go

May to September is the dry season and effectively the only sensible window for trekking; the wet months bring cloud, mud and closed routes. Even in the dry season afternoons cloud over, so start early.

Honest expectations

Altitude is the real subject here. Huaraz is over 3,000 metres and Laguna 69 tops 4,600, and people underestimate it constantly. Acclimatise for two or three days before any big walk, ascend slowly, and treat headaches and breathlessness as signals rather than inconveniences. Glacial retreat is dramatic and visible; some routes described in older guidebooks no longer reach ice.

Nearby

Huaraz is the hub for the whole range; the Chavín de Huántar archaeological site lies south across the valley.