An interesting dirt road through the fields, as an alternative shortcut on the Bierzgłowski Castle - Stężzewo route.
I have used it many times because riding on it (i.e. on a 20 cm wide rut) is simply more interesting and gives you the so-called "bicycle fan". However, I would advise you to use it only on dry days, because after heavy rains you can get stuck in terrible mud.