Features matched with its description
A: stalactites 3: tubes with hollow centers
B: stalagmites 2: tubes without hollow centers
C: speleology 1: cave science
D: speleothems 4: cave features
Speleology is shortly defined as the scientific study of caves. Speleothems are structures formed in a cave by the deposits of minerals from water dripping from the fractures of the ceiling of the cave. Most common types are the stalactites and stalagmites.
Stalactites began as a ring of crystals which later becomes small tubes with a hollow center. Stalagmites, on the other hand, are tubes formed without hollow centers.
