The correct answer is: 3!
Walk along the canal, towards the sea.
You can find the artwork on the northern part of the outlet, on the sea side.
The third, fourth and fifth man (from left to right) of the group looking at the outlet have shells on their clothes.
Too bad, try again.
Well done!
Roman camps
The camp near Valkenburg was called Castellum Praetorium Agrippinea and this region was marked with the name Lugdunum on the Roman maps.
The northern border of the Roman Empire is also known as the 'Limes'.
The Rhine formed a natural, easily defensible border. The Romans preferred to expand their empire beyond the river, but the tribes you just got know, got to resisted fiercely and this didn't happen eventually.
