Even before land surveying became established there was a unique map of Central Finland dating back to the 16th century. Even if we include all of Finland there are only a couple of dozen maps from the 16th century, perhaps 20-30 local maps, for which reason the map in question, depicting the wildernesses of Naarajärvi, is rare as such. What makes the map even rarer is the fact that no maps were made of hunting grounds. It was sufficient if the boundary stones were confirmed in court. The way the Naarajärvi hunting map came into being is quite well known. In the mid-16th century Central Finland belonged to the hunting grounds of Häme and Satakunta. The Naarajärvi hunting ground was apparently owned by Erkki Niilinpoika who hailed from Akaa in Sääksmäki.