The sharp pillars hanging from the roof of a cavern in limestone regions are called
Answer Details
The sharp pillars hanging from the roof of a cavern in limestone regions are called stalactites. They are formed by mineral-rich water dripping from the cave ceiling and leaving behind tiny mineral deposits. Over time, these deposits accumulate and grow downward, forming the long, pointed structures we know as stalactites. So, stalactites are formed from the top down, while their counterpart structures that grow from the cave floor upward are called stalagmites.