It is called a karst topography.
topography...............................
topography
Topography
A road map
Topography.
You mean topography ? There are certain maps called topography maps , they help identify direction and height of the area etc.
Cartography is the name of the science of map-making. Topography is a term that describes the condition of the land such as mountains etc.
its called KARST TOPOGRAPHY
Topography map
Topography. A topographical map will give you particulars.
topography