Aletsch Glacier

The Aletsch Glacier is the largest glacier in the Alps, located in the canton of Valais in southern Switzerland and forming the central feature of the Jungfrau-Aletsch UNESCO World Heritage Site (inscribed 2001). It is the principal glacial system draining from the Bernese and Valais peaks.

The glacier stretches for roughly 23 kilometres and occupies a broad valley carved between high alpine ridges. Key viewpoints such as the Eggishorn ridge and alpine villages like Bettmeralp and Fiesch allow visitors to observe the glacier’s expanse; hiking routes and guided glacier walks are common activities in the area.

The glacier has been monitored for more than a century and has been retreating and thinning in recent decades, a trend documented by Swiss glaciological studies. Its status and changes are central to regional climate research and alpine environmental management.

Geographically the glacier lies on the southern side of the Bernese Alps in Valais, above valley communities such as Fiesch and Bettmeralp; the site forms a dominant feature of the high-Alpine landscape.

• Size and significance: At about 23 kilometres long, it is the largest glacier in the Alps and forms the principal glacial tongue of the Jungfrau-Aletsch region.
• Best viewpoint / access: The Eggishorn ridge provides one of the most accessible panoramic viewpoints over the glacier and is reachable from the Fiesch/Bettmeralp lift network.

What to See #

• Eggishorn viewpoint: Prominent viewpoint and ridge offering panoramic views over the glacier and surrounding peaks, reached by a short trail from the Bettmeralp/Eggishorn lift system.
• Bettmeralp / Bettmerhorn area: Accessible mountain accessed from the car-free resort of Bettmeralp; trails and cable cars provide options to view the glacier from above.