How is it? Have you ever photographed there? Did it invite Police attention? Is there any safe/ legal place, or way to do it? If you click at DEL regularly, how do you manage?
Try the authors of the following webpage; www.planespotters.in/ They may be able to assist as I would assume that you may need a local guide or helping hand.
Try the authors of the following webpage; http://www.planespotters.in/ They may be able to assist as I would assume that you may need a local guide or helping hand.