For the man who observes keenly, directions can be determined by the lichens, mosses or anthills.
It turns out that the north side of rocks and trees have more mosses and lichens than in the south. This is because after the rain the trunks of trees on the north side are longer dark and damp, which is also a sign of the determination of direction.
In contrast to lichens, anthills are on the sunny side of rocks and trees. I.e. the south.
If there is no tree of which anthill is “supported” then look more sloping and longest side. It collects sunlight and always point south.