There are horizontal ones.
In a gale, they can be both at once.
We see these falls as paths because we are pathfinders. See the path to the right in the image below? Can’t resist?
Of course not. That is the human spiritual trace. The sheep is an elaboration, and exquisite for that. These creatures are not paths but warmth, hearth and home. Their other form is this:
That is a sheep and a human family, spiritualized as one, in time. This is the water path that makes it possible:
It is one with them, because of human path-finding. That is the spiritual path at the edge of the known world.