A huge spiral carved into the ground in India covers almost 100,000 square metres, dwarfing other individual geoglyphs like those in the Nazca desert in Peru.
The spiral is in a small cluster of geoglyphs discovered by father-and-son researchers Carlo and Yohann Oetheimer, who are based in Luriecq, France. Carlo searched Google Earth images of the Thar desert in India and identified eight sites with possible geoglyphs. In 2016, they flew a drone over them and found that four were furrows dug for failed tree plantations.
One site …
Article amended on
26 May 2021
We corrected the number of sites that were failed tree plantations
Source: Humans - newscientist.com