Q. What is a stone pillar?

A stone pillar is a tall usually vertical element made of stone brick metal etc. that holds up a roof or has an aesthetic purpose. Distinct peak formed by a tall thin usually sheer rock column. An earth pillar is "an upright free column of soil that has been shielded from erosion by a natural cap of stone on top" according to the Oxford Dictionary of Geography. Common examples can be seen in the southern Tyrol where gully erosion has carved through boulder-rich moraines. Another form of earthen pillar is the hoodoo. The Awa Sand Pillars and avolja Varo are two types of earth pillars.