Mount Fuji is a symmetrical volcano that has become a symbol of Japan.

The longer version

Symmetry comes from repeated eruptions of similar material. Layered volcanoes build up from ash and lava that pile evenly around a central vent, producing a cone with smooth slopes. Erosion has not yet cut deeply into this one, so the shape stays regular. Rain and wind remove only loose surface material.

The mountain is still classed as active, with a recorded history of eruptions followed by long quiet periods. Snow caps the summit for much of the year, and the snow line shifts with the seasons. Its isolated position makes it visible from a great distance across the surrounding plain, and artists have depicted the shape for centuries.

Where this entry sits

These facts wander across maps, borders, deserts, rivers, mountains, and the extreme corners of the natural world. Each one is short and self-contained, offering a small surprise about places you may never visit rather than anything you actually need. The full list sits on the Geography page, where every entry is listed in order.