Stalactites grow down from the cave ceiling, while stalagmites grow up from the cave floor. ... As the carbon dioxide is released, calcite is precipitated (redeposited) on cave walls, ceilings and floors. As the redeposited minerals build up after countless water drops, a stalactite is formed.

Where do stalactites typically form?

A stalactite is an icicle-shaped formation that hangs from the ceiling of a cave and is produced by precipitation of minerals from water dripping through the cave ceiling. Most stalactites have pointed tips.

Is stalagmite a living thing?

Living things usually grow during their life cycle. Note that the word "grow" refers also to non-living things which can get larger. Examples are crystals, stalactites, and stalagmites. Many living things move on their own although some, like plants, do not.