The name of the upper part of stalactite

Stalactites, also known as stalactites, refer to different forms of calcium carbonate deposits such as stalactites, stalagmites and stone pillars formed in caves in carbonate areas under long geological history and specific geological conditions. The formation of stalactites often takes tens of thousands or hundreds of thousands of years. Because of its long formation time, stalactites have important research value for paleogeological investigation. In limestone, water containing carbon dioxide will dissolve calcium carbonate when it penetrates into cracks in limestone. When water with dissolved calcium carbonate drips from the ceiling of the cave, the dissolved calcium becomes solid again (called solidification) due to the evaporation of water and the escape of carbon dioxide. It grows gradually from top to bottom and is called "stalactite".