After bouncing our hire car down a heavily pot-holed track we found - well very little really. most of the walls have long gone, you do get some idea of the size of stones they once contained and were obviously hugely impressive in their day, but unless you're an archeological junkie I wouldn't bother with the detour.
Presumably this refers to the ancient walls at Krane. When we went there (four years ago) there wasn't a soul about - very atmospheric.