naturally formed geometric s in limestone caves in baratang island, andaman, india..

ancient andaman aragonite asymmetric asymmetry baratang calcite calcium carbonate cave cavern caves cavity columns contour contours created crystal danger dangerous dark darkness design exploration flowstones formation formed forms fragments geological geometric grotto hollow india irregular island islands lime limestone limestones marine marvel middle mineral motif natural naturally nature nicobar outline outlines pattern phenomenon rock rocks rocky sea sedimentary shape shapes silhouette silhouettes skeletal speleothem stalactite stalagmite stone stones stony tourism travel tunnel uneven unique wonder