A complex crop circle, which appeared in an English barley field last month, is a cryptic representation of the first ten digits of Pi. In other words, the circle is divided up into ten invisible segments, like a pizza. To represent the 4 in 3.141592654, the third notch is four segments further along in the spiral than the preceding mark.
The Mysterious Cones of the Egyptian Desert. Created by Greek artist Danae Stratou and the DAST art team in the this earthwork art is called “Desert Breath.” It covers square meters in the Egyptian desert near the Red Sea, and took several years to create