I very like Kernave, it's very quiet and peacefull township. So i decade to appoint the cache to this beautifull church. To read about this cache you can at: http://lt.wikipedia.org/wiki/Kernav%C4%97s_%C5%A0v%C4%8D._Mergel%C4%97s_Marijos_%C5%A0kaplierin%C4%97s_ba%C5%BEny%C4%8Dia
The cache is hidden in the church teritory. I think that you don't have any problems, so enjoy! :)