The loose & dry surface overlays harder lower layers. It's a sunny day but the sun is well down. The dry sand and the activity on it, would make afternoon more likely than morning. That would make north to the right at northerly mid latitudes. The sand has a lot of quartz and quite a few pieces of grit which suggests it is from sedimentary rock.
There are various odd marks that I can only think are different types of footwear. Then there are two tracks similar in form to my wheel barrow (fat and low pressure).
There are two equal sized wing impressions. I don't know whether these appear on landing or takeoff. But as there are no obvious tracks from the bird heading to/away, I'm going to guess one bird landed, walked a little bit and then took off. And, I'll guess it's a pigeon - because they do that all the time. If so, the feet are small, which indicates children ... so I bet one dropped some food.