I couldnt get up close to this one either. One thing I did find very interesting was its proximity to Croghan Hill. I would be very interested to see how Croghan Hill looks from the standing stone. The stone is just below the dip of a hill and I was think that just the belly/breast of Croghan Hill would be visible behind it.
Seems to be some kind of crop down so that should be harvested by the end of the summer so will be worth a second look then.
See this post for an idea of the view from the standing stone in the field just beside it. http://www.themodernantiquarian.com/post/46447