Castlestrange

Although this site is on private property, it has an information board etc and as such I would think that there is no issue with access.
If you happen to be going from Athlone to the Northwest this is a nice place to stop off on the way. It is one of only three la tene style stones in ireland.
It was not found near any other sites and with very little context so you have to wonder where it came from.