Ключевые слова: asphalt, background, blue, cold, color, december, detective, exercise, foot, footmarks, footpath, footprint, footstep, frost, frozen, hiking, ice, imprint, journey, landscape, leisure, mark, nature, outdoor, painted, pattern, pavement, print, road, season, sign, snow, step, street, stroll, suspect, suspicion, symbol, trace, track, trail,