"It is a pinnacle of calcium that grows from the floor of limestone cave." This is a description of
Answer Details
The description is referring to a stalagmite. Stalagmites are structures that grow upwards from the floor of a limestone cave and are made of calcium deposits. They look like pillars and are formed by the dripping of mineral-rich water from the cave ceiling, which then builds up layer by layer on the cave floor. They are often found in caves and are an important part of the cave ecosystem.