麻豆约拍

Spectacular limestone landscapes can also be found underground. Chemical erosion creates intricate labyrinths of caverns and chambers with stalactites and stalagmites. When the flowing water reaches a layer of impermeable rock it flows horizontally, creating the water table. The level of the water table fluctuates. The water eventually emerges further downstream as a spring or well. At this point, the water is rich in mineral deposits and as it drips over vegetation and objects, petrification occurs.