The village of Euseigne is famous for its fairy chimney rock formations named Pyramides d'Euseigne. These are small natural reliefs, which are between 10 and 15 meters tall, are crowned by a stone and were formed by the deterioration of moraines. Thanks to their relatively big weight, these blocs protect the pyramids by compressing the underlying moraine. These pyramids were shaped after the last glaciation, and after the disappearance of the glaciers which were overwhelming Heremence and Herens valleys, between 10,000 and 80,000 years ago. The main road of the valley goes through a small tunnel dug under these rock formations. Read more ...

The 'Pyramids of Euseigne' in the Swiss Alp Are Spectacularly Carved By Erosion   IFL Science - December 27, 2024

They are much older than the Pyramids of Giza. Back in 1983, they were awarded a place in the Swiss Federal Inventory of Landscapes and Natural Monuments of National Importance - and it's not hard to see why. Located amid the backdrop of green alpine forest, they consist of 10-15-meter (33-49 foot) high geological structures with rocks sitting on top.

Despite first appearances, these dark top rocks were not placed there, but rather ended up on top of the towers through geological erosion processes. The strange sight was formed naturally during the end phase of the last Ice Age, around 80,000 to 10,000 years ago.

As glaciers receded amid warming temperatures, their tongues deposited massive amounts of softer material known as moraines, embedded with harder boulders. Over time, rain and meltwater washed away the softer debris, exposing the hardy boulders. They act like tough capstones, shielding the underlying moraines from further erosion, leaving the columns beneath. They won't be around forever, though - they have been described as 'symbols of transience' because the structure will continue to erode and someday will be gone.