When you fly over Texas you are struck by these green circles that at some point may take over the whole span of ground visible through the plane window.
There is actually nothing striking about them – they are just circular fields in the barren brown terrain. I suppose watering equipment going the full circle allows for the even and regular water supply that coupled with sun makes for the good yield in the harvest time.
But to people who often consume the environment through the popular media lens cannot help but wonder if these are some alien landing marks. Or those can be signs that humans draw to make the Earth look more intriguing for alien civilizations. Besides, this brings back some green to the otherwise brown landscape.
Whatever you think of these green circles, they are worth checking out when you fly over Texas.
More pictures of these circles can be seen here.