Helictite
A helictite is a type of speleothem found in limestone caves that grows in unusual, twisted shapes that defy gravity. These formations are typically composed of calcium carbonate, formed as mineral-rich water drips or flows through the cave and deposits minerals in intricate and delicate patterns. Helictites can take on a variety of shapes, including spirals, curls, and zigzags, and are often prized for their beauty and uniqueness in cave formations.