I found an invisible Wall near Sulfur(Normal) in the middle of the map near the red desert thingy.
Satisfactory-map.com shows
Game Engine Co-ordinates 3164,92073
Map Co-ordinates 55.39,52.76
The invisible wall is like 100m to the south of these coordinates.
Those conveyerbelt posts mark the walls. Feels like an invislbe Tree or stone.