From the Introduction: Two small highways, with two lanes in either direction, cross each other here. One of them descending into an artificial valley to pass underneath the solid concrete bridge of the other. While solid concrete dividers separate the lanes going into different directions the outer lanes are only flanked by the grass covered slope of the small valley or aluminium crash barriers respectively. More notably is probably that both highways are flanked by street lamps in regular intervals, providing the streets with moderate illumination even in the darkest of nights, which suggests that these highways are crossing in an urban area.