They are the cenotaphs, the places where the princes of Rajasthan were cremated and a cenotaph built in their honor. These are the cenotaphs of Jaisalmer. If you go to flickr.com and search for the word "cenotaph" and do a slide show of the results you will be absolutely amazed at some of the photographs taken of these places. I was. That’s why I wound up going to see them. It cost me 200 rupees, about $5 for a tuk-tuk driver to take me out there to see them, wait for me for half-an-hour and then take me back to the hotel.