Don't know the use of this 'kulam' (as Raj said). Would have been better to provide us with some more information, Sayed in order to formulate a more appropriate comment.
A pond or kulam, nevertheless it would make a very pleasant swimming pool !!! I love the stone lining, the steps and even the growth at the sides. Not being too religious myself, I do hope that I am not hurting anybody's feelings, though. Just in case. Yours SAM