Enigmatic designs found in Indian desert: Researchers discover largest handmade drawing in Thar Enigmatic designs found in Indian desert: Researchers discover largest handmade drawing in Thar The discovered motifs consist of two geometrical figures, a giant spiral adjacent to an atypical serpent-shaped drawing. advertisement Boha's meandering lines. (Photo: Archaeological Research in Asia) India has always been at the centre of civilisations, the oldest being the Indus Valley, however, a new discovery is piquing the interest of archaeologists worldwide. The discovery of a geoglyph, set of drawings, in the vast arid expanse of the Thar desert has garnered eyeballs from every corner as debate ranges that it may be the largest drawing ever made.