Secteur pavé #3 - Mini Arenberg.
I don't know of any trenches nearby, but there's a grave of German soldiers from World War I nearby, and the sector runs partly through trees, so the name suggests itself. The surface is very uneven, and for the most part, you can't avoid the cobblestones when driving on the shoulder, so the Arenberg forest is a dream come true, and you don't have to travel to France to experience a similar experience. Four stars for the short length of this section. This road is probably a historic relic of Polish paving engineering. I recommend it, and I hope they don't cover it with asphalt...