Stalagmite

A Stalagmite is a rocky formation that can be found on the floor of a cave. It rises from the floor of a limestone cave when mineralized solutions drip from the ceiling and deposits of calcium carbonate form columns on the ground. The corresponding formation on the ceiling of a cave is known as a stalactite.

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