In order to reach Jeziory Wielkie directly from Poznań one can use the S11 route leading through Kórnik and Bnin,
then please take the Błażejewska street – there is a sign saying ‘Jeziory Wielkie 6. Then please continue through Błażejewko.
Having passed a green sign with the name of the village saying ‘Jeziory Wielkie’ one should take a right and go down the street for about 300 m passing a few allotments and a farm.
Here are the coordinates regarding the location of the main gate:

52°10’52.6″N 17°07’12.7″E

In the attachment there is a map showing the access road and the location of the park.