Cave popcorn, or coralloids, are small nodes of calcite, aragonite or gypsum that form on surfaces in caves, especially limestone caves. They are a common...

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

exploring wild cave systems (as distinguished from show caves). In contrast, speleology is the scientific study of caves and the cave environment. The...

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...

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...

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...

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...

Tseung Kwan O station Cave popcorn, a common cave formation Foam peanut or packing peanut, sometimes referred to as popcorn Popcorn ceiling, a decorative...

stalactites, stalagmites, flowstone, cave popcorn, boxworks, helictites, scintillites, conulites, coralloids, cave pearls, rimstone, rafts, rims, vents...