They typically form in caves where they can grow undisturbed for hundreds of years. Stalagmites grow from the floor up and stalactites stick to the ceiling. Dripping water deposits minute amounts of limestone that build up over the years.
+++
You do sometimes find small, rather coarse versions growing under bridges etc.built from bricks or ashlar masonry and mortar. Here, the calcite that is their constituent mineral has been leached from the structure's mortar. However caves in limestone (the rock hosting by far the majority of caves) are the natural home for stalagmites and stalactites, and their related formations.
If a stalactite and a stalagmite joined it would form a column.
When the stalctite drips water
They do meet and form a column
stalagmite
stalactite forms form the top stalagmite forms the bottom
A stalagtite is a mineral formation that forms at the top of a limestone cave. A stalagmite is a mineral formation that rises from the bottom of a limestone cave.
If a stalactite and a stalagmite joined it would form a column.
A stalactite ("c" in the middle) is a growth of crystalline calcite precipitated from solution in the ground-water feeding it, and growing downwards from a water-carrying joint in the roof of a limestone cave. Its opposite number, growing up from the floor, is a stalagmite.
When the stalctite drips water
They do meet and form a column
Stalagmite.
stalagmite
A dripstone column forms when a stalactite and and a stalagmite join together.
stalactite forms form the top stalagmite forms the bottom
A dripstone column forms when a stalactite and and a stalagmite join together.
Stalagmites and stalactites can take thousands of years to reach just a few inches. The rate of growth for a stalagmite is based on the amount of water that is flowing through the rocks and the amount of Ca dissolved in it, but they most certainly do not grow overnight. So, no, no human could stand still long enough to have a stalagmite form on them.
I checked in translator.com, and it says stalagmite