video from last year and some info in English :
http://tripatlas.com/videoplay/kxMGMszyPoI
Info on this year´s event ( only in Finnish ) :
http://www.nsaura.fi/tapahtumanesittely.html
The event is on Facebook here :
http://www.facebook.com/event.php?eid=315694177760
entrance fees :
adults 5 Euros
children 7-16 years 2 Euros
car 5 Euros
see this also ! : http://www.nsaura.fi/info.html