There one at the entrance to the keep and one just inside of it. There are 3 at the number 4 on the map. Those are probably the easiest. There are some where Najena spawns but they require the stupid keys. the is also some in the jail area near 11 but that also requires a key. If your a small race you can fit through the bars otherwise you need to collect the keys
http://wiki.project1999.com/Najena