A stalagmite (from the Greekg stalagma ("Σταλαγμίτης"), "drop" or "drip")'s a type of speleothem that rises from the floor of a limestone cave due to the dripping of mineralized solutions and the deposition of calcium carbonate. The corresponding formation on the ceiling of a cave's known as a stalactite. If these formations grow together, the result's known as a column. When touring caves with stalactites and stalagmites you might be reque… (More on Stalagmite)