A stalactite is a mineral formation that hangs down from the roof of a cave. It may or may not be hollow, and it is built up over long periods of time (on the order of many, many thousands or tens of...
when you go into a cave and you see large spikes pointing downwards from the ceiling then you are looking at a stalactite, spikes that point up are stalagmites.
Stalactites hang from the ceilings...
Caves are damp places, so when a drip of water forms on the ceiling, and does not fall, eventually, it sort of fossilizes. As more drips form, over millions of years, the stalactite lengthens. The...