Several seals discovered at Indus Valley Civilization (c. 3300–1700 BC) sites depict figures in a yoga or meditation like posture. The most widely known of these was named the "Pashupati seal"[13] by its discoverer, John Marshall, who believed that it represented a "proto-Shiva" figure.[14] Many modern authorities discount the idea that this "Pashupati" (Lord of Animals, Sanskrit paśupati)[15] represents a Shiva or Rudra figure.[16][17]
There is considerable evidence to support the idea that the image's posture "is a form of ritual discipline, suggesting a precursor to yoga"[18] according to archaeologist Gregory Possehl (who also questions the proto-Shiva theory). He points to sixteen other specific "yogi glyptics"[19] in the corpus of Mature Harappan artifacts as pointing to Harappan devotion to "ritual discipline and concentration". These images show that the yoga pose "may have been used by deities and humans alike". He suggests that yoga goes back to the Indus Valley Civilization.[20]
Gavin Flood characterizes these views as "speculative", saying that it is not clear from the 'Pashupati' seal that the figure is seated in a yoga posture, or even that the shape is intended to represent a human figure, though it is nevertheless possible that there are echoes of Shaiva iconographic themes, such as half-moon shapes resembling the horns of a bull.[21][22] Other authorities do support the idea that the 'Pashupati' figure shows a figure in a yoga or meditation posture. They include Archaeologist Jonathan Mark Kenoyer, current Co-director of the Harappa Archaeological Research Project in Pakistan[23][24] and Indologist Heinrich Zimmer.[25]