Stalactite

A Stalactite is a rocky formation that can be found on the ceiling of a cave. When a drop of water flows down the stalactite, the water evaporates and leaves a mineral deposit of calcite. This slowly increases the length and thickness of the stalactite. The corresponding formation on the ceiling of a cave is known as a stalagmite.

There were huge stalagmites and stalactites by an underground lake in the Gringotts Wizarding Bank vault area.

Appearances

 * Harry Potter and the Philosopher's Stone
 * Harry Potter and the Philosopher's Stone (film)
 * Harry Potter and the Philosopher's Stone (video game)
 * Harry Potter and the Deathly Hallows
 * Harry Potter and the Deathly Hallows: Part 1 (video game)
 * Harry Potter and the Deathly Hallows: Part 2