Next to Catena (going east) there is another shop and then a bar, next to that there is a tunnel leading inbetween buildings. The 3 buildings bellow this marker are also more to the left, the dotted path comes from the tunnel and splits towards 11B narrowly between buildings and it also goes further down along the 3 buildings, then splits again at the middle one going towards the front middle of the last one then connects to the road, the other part keeps going down (not exactly straitght downwards) and connects to the road, these 2 split paths also connect before reaching the road as next to the road there are garages (so the paths surround a square patch of grass). The right path also splits again before meeting the road to the right but thats a whole different thing. Youre gonna need someone on the ground. I might think about it one day