Some information about the event site may be published here later.
The site is about 50 km to the north from Helsinki, and should be quite easy to find. The organisation Leirikesä ry provides us with simple driving instructions to the site, but unfortunately in Finnish only. A translation and more details will be provided upon request.
When coming from the directions of Turku, Hanko or Lahti, you should try to get yourself onto the road 25 towards Hyvinkää. Then follow the small map provided with the abovementioned instructions. Others should try to find their way onto the Helsinki-Tampere motorway (E12) and follow the smaller map from there.
Mistress Johanna aff Hucka has written a detailed explanation about the bus connections (from Helsinki central bus station to the site), which can be found on the Finnish page about the event site and connections. A translation and more details will be provided upon request.
A very general explanation of the instructions there would be that the timetables show connections from Helsinki central bus station (Kamppi bus terminal) to the nearest bus stop which is called Kiljavan kivi ("Rock of Kiljava"). (Note that if coming by the connection at 9:25 on Saturday, you must change the bus in Nurmijärvi! Other connections mentioned are direct.) The bus ride between Helsinki and the site takes about an hour either way.
Nearest railway station is Hyvinkää, but there are no bus connections from Hyvinkää to the site. The only way to benefit from a train would be to arrange somebody to pick you up from Hyvinkää, but the organisers have no resources to help you with this.