Claim: Luray Caverns has many spleotherms formed from cave deposits of limestone, mortar or dolomite,  such as pillars and columns, stalactites and stalagmites; its first discovered column is called Washington Column.
Evidence: The cavern system is generously adorned with speleothems such as columns, mud flows, stalactites, stalagmites, flowstone, and mirrored pools. Speleothems typically form in limestone or dolomite solutional caves. For secondary deposits, derived from concrete, lime, or mortar, outside the cave environment, see Calthemite.