The human in question is standing in the bottom-left of the photograph, on the pavement by the curve in the road. He is having his boots shined.
So there is enough information to know that there are two human beings. Sounds like those records of the very first man to climb a mountain, you know, except of all those native guys that went there before and carried the bags, guided and have all support so that european could be the first man to get there.