  Fractal surfaces are ubiquitous in nature as well as in the sciences. The
examples range from the cloud boundaries to the corroded surfaces. Fractal
dimension gives a measure of the irregularity in the object under study. We
present a simple method to estimate the fractal dimension of mountain surface.
We propose to use easily available satellite images of lakes for this purpose.
The fractal dimension of the boundary of a lake, which can be extracted using
image analysis softwares, can be determined easily which gives the estimate of
the fractal dimension of the mountain surface and hence a quantitative
characterization of the irregularity of the topography of the mountain surface.
This value will be useful in validating models of mountain formation
