Circles on the field and other formations. Argentina

Andreas Antonio Lopez (farmer), Mario Antonio Lobo (his nephew, 15 years old) They were picking lemons when they "suddenly heard a noise like the whistling of the wind." they saw an object shaped like 2 plates connected by edges. the lower part of it was red, while the upper part, from which 2 "antennas" stuck out, had a shiny silver uvet. The object was smooth, without any windows or doors, and was 3 meters in diameter and 1 meter high. he stopped 30 meters away from the witnesses, swaying in the air, and then went down... As they approached the UFO, it let out a strong whistle and flew away in the direction of the ravine known as La Quebrada de los Cainzo, where it disappeared among the trees. At the point where he was floating, witnesses found 2 two-year-old lemon trees withered right on the root.