Au Tour du Mont-Blanc Project

Fog

Fog and limited visibility

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Low clouds and fog are very common in mountainous environments. A compass, a map and an altimeter (and being sure you know how to use them) as well as a rescue whistle are handy in dangerous situations and can keep you from wasting significant amounts of time.

In the presence of fog, proceed as a group and follow the trail signs meticulously (even if you already know the way). When visibility is down to a minimum, stop and wait for better conditions instead of venturing out with risky explorations.