Geologic formations in the Big Room of Carlsbad Caverns National Park, New Mexico

Types of speleothems include:
Flowstone - is sheet like and found on cave floors and walls
Dripstone - calcium carbonate in the form of stalactites or stalagmites
Stalactites - pointed pendants hanging down from the cave ceiling, from which they grow
Chandeliers - complex clusters of ceiling decorations
Stalagmites - the "ground-up" counterparts of stalactites, often blunt mounds
Totem Pole Stalagmites - tall and shaped like their namesakes