A cave pearl is a small, usually spherical, speleothem (cave formation) found in limestone caves. Cave pearls are formed by a concretion of calcium salts...

Boneyard Boxwork Others Cave popcorn, also known as "coralloids" or "cave coral", are small, knobby clusters of calcite Cave pearls are the result of water...

Australia, a pearling town Cave pearl La Pelegrina pearl Les pêcheurs de perles, The Pearl Fishers, an opera by Georges Bizet Oriental Pride Pearl Maxima,...

Bungonia Caves Careys Cave Church Creek Caves Colong Caves Finchs Caves Jenolan Caves (List of caves within the Jenolan Caves karst) St Michaels Cave (Avalon...

A show cave—also called tourist cave, public cave, and, in the United States, commercial cave—is a cave which has been made accessible to the public for...

caves: caves are rare across most of the world; most caves are dark, cold, and damp; and other cave inhabitants, such as bears and cave bears, cave lions...

(from Ancient Greek σπήλαιον (spḗlaion) 'cave' and -λογία (-logía) 'study of') is the scientific study of caves and other karst features, as well as their...

A cave or cavern is a natural void under the Earth's surface. Caves often form by the weathering of rock and often extend deep underground. Exogene caves...

archaeology, cave paintings are a type of parietal art (which category also includes petroglyphs, or engravings), found on the wall or ceilings of caves. The...

solutional cave, solution cave, or karst cave is a cave usually formed in the soluble rock limestone. It is the most frequently occurring type of cave. It can...