NEW REGULATIONS

Since June 2026, swimming has been banned in all lakes situated in the heart of the Pyrenees National Park.The aim of this new regulation is to protect particularly fragile mountain ecosystems.

This measure is, above all, an initiative aimed at protecting biodiversity and the water quality of high-altitude lakes.

Why this ban?

Mountain lakes are not merely places to relax. They are home to remarkable biodiversity and ecosystems that are particularly vulnerable to human activity.

Swimming can have a number of consequences:

  • the gradual erosion of the riverbanks;
  • disturbance to aquatic wildlife;
  • the deterioration of the vegetation along the riverbanks;
  • the introduction of traces of sun cream or cosmetics into the water.

Taken individually, these impacts may seem minor. But when repeated by thousands of visitors throughout the summer, they ultimately cause lasting damage to these natural areas.

Which lakes are affected?

In the Cauterets Valley, there are several lakes within the boundaries of the Pyrenees National Park. Among the best known are Lake Gaube, situated in the Gaube Valley at the foot of the Vignemale, as well as Lake Estom in the Lutour Valley and Lake Ilhéou in the Cambasque Valley. There are also numerous high-altitude lakes in the Marcadau Valley, such as the Lakes of Cambalès, Embarrat and Arratille.

To check whether a lake is part of the national park, you should consult a map of the Pyrenees National Park or check its GPS coordinates against the boundaries of the protected area.

How can you cool off in Cauterets whilst respecting nature?

The mountains offer plenty of ways to enjoy the fresh air without harming the natural environment. After a hike, you can, for example:

  • To dip one’s feet in a stream;
  • Take a break by a waterfall;
  • Enjoying the shade by the banks of a mountain stream;
  • Having a picnic by a lake without going in the water;
  • Marvel at the exceptional scenery offered by the mountain lakes.

These moments allow you to enjoy the Pyrenees to the full whilst helping to preserve their natural heritage.

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What to do in the mountains

There are a few simple steps we can take to help preserve these natural areas:

  • Do not swim in the lakes within the National Park.
  • comply with the regulations of the Pyrenees National Park;
  • stay on the marked trails;
  • take all their rubbish away;
  • to observe nature without disturbing it;

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