Nature in its different shapes is based on the circle mandala process...
Here a few examples, but they are countless...

Flowers and plants :

mandala naturel9

mandala6

mandala naturel2

Lots of shells
mandala naturel4

Natural phenomenons, dewdrops, water and wind spirals, cosmos, galaxies, planets, stars etc...

mandala naturel6

madala naturel 2

mandala naturel8

Why would we be different ?

mandala naturel7

mandala naturel3

Isn't the shape of a phenomenon the reflection of its inner nature ?...
Then, awakening to our true nature is a mandala...

Hugs to you all :wave: