Tracks

Looking down from a bridge these track marks are obviously from a heavy piece of machinery that maintains the CityRail network. I went for a wander this afternoon while having an early dinner and got some interesting shots of the fading sun and reflections off buildings but somehow these imprints left in mud was my first blip choice. I think its the colour of the rocks or just the neatness of the tread pattern; either way its my Sunday post.