Nothing is left of anything except the hill itself, although the plaque notes that huts and other foundations were found during archeological digs on the site. Supposedly, there are post holes and fire pits still visible, but we didn't see anything. The ground felt weird - all squishy and spongy, like walking on twinkies. I kept waiting to sink in to the mossy ground up to my ankles. It was a most disconcerting sensation.
Hailes is quite different from Crichton.
Much smaller and with a better 'living' layout preserved. Most of the castle is gone - but you can see the faint rise where the wall was surrounding the inner court, and the thick walls that made up the hall. There is a prison in one wall, it is that thick. I never realized just how big most castles are. All those lovely pictures just don't give you a proper sense of scale.