Mountains are not typically cone-shaped. While some mountains might appear conical, especially volcanic mountains, most mountains have a variety of shapes and forms.

Here's why:

* Volcanic Mountains: These are formed by the accumulation of lava and ash eruptions from a central vent. The cone shape arises from the gradual buildup of materials around the vent. However, even volcanic mountains can have complex shapes due to different eruption styles and erosion.

* Folded Mountains: These are created when tectonic plates collide and compress rock layers, causing them to fold upwards. Folded mountains often have elongated ridges and valleys, rather than a conical shape.

* Block Mountains: These form when large blocks of the Earth's crust are uplifted along faults. They tend to have steep, jagged edges and flat summits, not a cone shape.

* Erosion: Mountains are constantly being shaped by erosion, caused by wind, rain, ice, and other factors. Erosion can significantly alter the initial shape of a mountain, often carving out valleys, ridges, and other features.

In short, mountains are rarely perfect cones. They have complex and diverse shapes due to their formation processes and the constant forces of erosion.