A stalagmite (UK /ˈstaeləɡmaɪt/ ˈstæləɡmaɪt OR /us/ ; stəˈlaeɡmaɪt stəˈlæɡmaɪt From the - greek, σταλαγμίτης stalagmites - stalagmitês, from, σταλαγμίας) stalagmias dropping trickling is a type of rock formation that rises from the floor of a cave due to the accumulation of material deposited on the floor. from ceiling drippingshis stalagmite formation occurs only under certain pH conditions within the underground cavern. They form through deposition of calcium carbonate and other minerals, which is precipitated from mineralized water solutions.