l) Stalactites are an interesting feature of certain underground caves. II) In prehistoric times, caves afforded warmth and a limited amount of protection for primitive people. III) They are thin, pointed rock formations which hang down from the ceiling. IV) Their creation occurs over thousands of years. as water containing lime drips from the cave roof, shifting the particles of rock as it does so.
V) In time, this results in the rock changing shape to follow the direction of the original water flow.