The popular Matterhorn Peak is perhaps the world's most visual example of such a natural formation. Referring to this, Eric Rigot, a geology professor at the University of California, stated, This is just a mountain that looks like a pyramid.

While several mountains around the world have a pyramidal shape, the most iconic and mathematically "perfect" example is the Matterhorn, located on the border between Switzerland and Italy. Its four steep faces point toward the cardinal directions (North, South, East, and West), giving it a distinct, sharp triangular silhouette that has become the universal symbol for mountain peaks. Another famous example is Mount Kailash in Tibet, which is considered sacred in several religions and possesses a strikingly symmetrical four-sided shape. In the Antarctic, there is a peak known as "Pyramid Mountain" in the Quartermain Mountains, which is so perfectly shaped that it has sparked internet conspiracy theories about its origin, though geologists confirm it is a natural result of "nunatak" erosion where glaciers carve away the sides of a peak. Other notable mentions include Mount Belukha in Russia and the "Black Pyramid" of K2. These formations are usually the result of "cirque" erosion, where multiple glaciers move away from a single central point, scouring the rock into flat faces and sharp ridges known as "arêtes," eventually meeting at a single, pointed summit.