While hiking through a forest, I came across these mushrooms growing in an almost perfect circle. I was sure there must a good reason why they were growing this way, but I could not see it.
Back home, I asked Wikipedia and it turns out these fairy rings are not uncommon. There are several theories why they grow in this way, but apparently there is no consensus yet. Until the scientists figure the mystery of the mushrooms out, the fact that they are pretty will have to suffice.