Green signs. It does not run near this information kiosk. You are on the inside of the fortifications and the Nature and Scenic Trails run on the other side of the walls and embankments, along external fortifications. If you want to get to the Nature Trail, walk by the Arsenal eastwards, through the Szczebrzeska Gate. When you walk back along the trail, you can see remnants of riparian greenery near the
counterguard* of Bastion III and the face of the bastion.