I'm afraid that the post is as vauge as the title.

There is the remains of a structure (mounds not walls) on the train route between Newbridge and the Sallins & Naas stop. (2 mins form S&N on left heading towards NB) I spotted it about 2 years ago and everytime I'm on the train it bugs the hell out of me, that I only get a few seconds glance at it and no time no figure out what on earth it could be. I tried everything from drawing sketchs to taking pictures, neither of which work every well when you're flying by at 60 mile a hour. It's quite large 20yds x 10yds, roughly rectanglar, has internal walls and covers flat ground aswell as running up the side of the neighbouring hillock. I don't care if its anicent or not anymore, i just want to know what it is. Please, if any one takes this route, put me out of my misery.