footprints in the snow looking like a parabola

line drawing branch sketch twig pattern iron wing art leaf design wall font circle lighting winter freezing tree snow snow footprints ice crack winter parabola traces park lake mathematics maths frozen freezing white sign beautiful impressive tracks abstract original frost natural scenery season drawing draw view outdoor outdoors beauty beautiful natural background footprints footsteps footprint footstep trace traces trail trails texture pattern shape crack ice icy frost freezing winter