general/speleothems

Cave-crystallized calcite crusts

Shelf-like speleothem

Cave formation

Geological phenomenon

Shelf-like speleothem

Speleothems composed of long needle-like crystals situated in clusters

Speleothems composed of long needle-like crystals situated in clusters

Speleothems composed of long needle-like crystals situated in clusters

Elongated mineral formation hanging down from a cave ceiling

Cave-crystallized calcite crusts

Mineral tube formation found in caves

Cave-crystallized calcite crusts

Small nodes of calcite, aragonite, or gypsum that form on surfaces in caves

Shelf-like speleothem

Elongate mineral formation found on a cave floor

Speleothems composed of long needle-like crystals situated in clusters

Shelf-like speleothem

Cave-crystallized calcite crusts

Shelf-like speleothem

Speleothems composed of long needle-like crystals situated in clusters

Cave-crystallized calcite crusts

Speleothem whose axis changes

Spherical speleothem concreted concentrically