Cavern Water Drops

Into the deep dark cavern drips an endless flow of water, winding its way down into this forgotten recess of the earth where shadow and silence are the sole companions. An echo signals some sense of time and a ripple in the black pond penetrates the motionless atmosphere here, where time seems to disappear and states of change are completely absent. Solutional caves are the most frequently occurring caves and such caves form in rock that is soluble, such as limestone, but can also form in other rocks, including chalk, dolomite, marble, salt, and gypsum. Rock is dissolved by natural acid in groundwater that seeps through bedding-planes, faults, joints and so on. Over geological epochs cracks expand to become caves or cave systems. The largest and most abundant solutional caves are located in limestone. Limestone dissolves under the action of rainwater and groundwater charged with carbonic acid and naturally occurring organic acids. This sound uses the following file from Freesound: http://www.freesound.org/samplesViewSingle.php?id=116730