Take a closer look at his hands. Are they in a position to dig? In my opinion he is just pretending. He is just standing there, leaning on his shovel planted in the sand, taking his time doing nothing (like his confrères in Basel).

I hurry —with the sharp breath of our scientific watchguard in my ears— to add that other interpretations are possible. It could be that our guy is a repair man trying to fix a barrier stuck in the half open position.

Now take a look at his legs. He is wearing wellingtons like his colleagues of the UK-group. The dress code is different though. Workers in the UK are in jeans. Jeans have a narrow fit and the top of the wellingtons is wider than the leg. Workmen in Bulgaria prefer slacks and the loose fit is drawn to reality.