Stepwell
A step wells ( engl. step well) is a fountain that has a different surface area depending on the water level due to the construction stage. Part they are built as multi-level, underground structures, which vary highly flooded. Step wells are found in the deserts and semi-deserts of Northwest India and Pakistan.
Gallery
Underground Construction in Delhi
The Rani ki vav is a famous stepwell in Patan, Gujarat.
Step wells, Hampi, Karnataka
Square stages pond in Shravanabelagola, Karnataka