Mountain
Stone piled high enough to make its own weather.
description
A mountain is stone piled high enough to make its own weather: uplift, ice, and the slow return to Sediment.
Mountain is a map item under Stone. Gravity holds the pile; Age is how long it takes to wear down. The high place on the map is still mineral. Erosion is that wearing; a Fault can raise it; Lava can build it.