At first sight the black smudges, which seem to have the shape of small ponds, look like they are all rotating in the same direction as if they form a two dimensional Milky Way. This phenomenon is found in the “Pohja Korvemaa” nature reserve, 30 miles from Tallinn, Estonia.
The experience of the swamp, with my two very involved hosts Helen and Andrew.
The difference of relief is the answer.
A: the “moutain”/ B: the ponds/ C: the surrounding.
Theory of the old lake which is drying.
Theory of the mountain which becomes a lake.