Three Cavern Pictures
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Limestone caverns are natural subterranean runway voids which have been selectively formed below upland areas at one or more levels in limestone strata. Fundamentally they are forms resulting from water drainage through limestone beneath the surface. They had their origin in the insidious percolation of groundwaters along structural controllines, such as joints and bedding planes. These waters, charged with carbonic acid, dissolved runways sufficiently large to permit streams to freely follow them, and the runways thus initiated have been further dissolved out and eroded by the streams which coursed through them.
Limestone, Caverns, Pictures, Groundwater
Proceedings of the Indiana Academy of Science, Vol. 38 (1928).
Malott, Clyde A., "Three Cavern Pictures" (1928). KIP Articles. 5410.