Did Indus Valley People Really See the Mysterious Unicorn Animal?

The Indus or Harappan 'unicorn' is one of the most common and characteristic features of the Mature Harappan Civilization, which dates from approximately 2600 to 1900 BCE; it occurs on tens of thousands of seals and sealings and is generally shown as a powerful animal resembling a bovine or an antelope with a single large horn, standing in front of a mysterious object. Since the Indus script has not yet been deciphered, it is not possible to establish with certainty the animal's true identity and meaning.

The central issue is whether the unicorn stands for a real animal, depicts a two-horned animal in profile, or is a deliberately invented symbolic or mythical creature. The traditional idea that the second horn was concealed behind the first suggests this, but terracotta figurines in three dimensions from places like Chanhu-daro, Mohenjo-daro and Harappa seem to show the animal having only one horn. This means it is far more probable that the single horn was an intentional characteristic rather than merely an artistic convention.

It is very unlikely that the unicorn stands for the Indian rhinoceros, the rhinoceros being a real one-horned animal known in South Asia. The Harappan artists showed rhinoceroses on their own and in a form that could be recognized. In the same way, there is no zooarchaeological evidence of a naturally occurring large one-horned bovine species corresponding to the unicorn.

A prominent interpretation, linked with Asko Parpola, holds that the unicorn can ultimately be connected with the wild-bull images of West Asia or Mesopotamia. According to him, these images might have been altered within the South Asian cultural setting and be associated with animals like the nilgai. However, his suggestion is not that the nilgai was in fact a one-horned animal, but rather that actual animals and earlier artistic traditions may have played a role in the formation of the Harappan unicorn.

Other explanations place a focus on mythology and symbolism; Gautama Vajracharya has in fact suggested a possible link with the ancient South Asian ṛśya tradition concerning a one-horned animal. Although such connections are interesting they are still only hypotheses since there is no readable Indus text that identifies the creature.

The object which was placed in front of the unicorn might in fact be just as significant as the animal itself; it has been seen as an offering stand, a ritual object, a feeding trough, an incense burner, a container or some other cultic device, and since it has been so frequently linked with the unicorn it is likely that the scene carried a particular cultural meaning rather than merely showing an animal.

The unicorn might also have had an administrative or social role. Since it is so common on standard seals, certain scholars have proposed that it could have symbolised a clan, a lineage, a merchant group, an institution, a political identity or some other kind of social organisation. The recent statistical study by Jamison, Uesugi and Yamaguchi (2023) supports the view that unicorn seals were part of an organised and variable system rather than merely serving as random artistic decoration.

It can therefore be concluded that the Harappan unicorn was not a biological species but a cultural image deliberately created. It most likely obtained its inspiration from actual animals, especially those belonging to the bovine family and perhaps also from forms resembling antelope.

The fact that the unicorn disappeared after the transformation of Harappan urban society around 1900 BCE is also important, indicating that it was closely linked with the institutions, identity systems and ideology of the mature Harappan urban world.

To sum up, it is likely that there was no actual one-horned Harappan cow, but there can be no doubt about the existence of a cultural idea involving a one-horned animal. The terracotta figures indicate that the single horn was deliberately included. The true mystery therefore lies not in whether the Harappans were able to depict a unicorn, but in what the unicorn meant, why it was so significant, and what name the Harappans gave to it. Until the Indus script is deciphered or a significant new discovery is made, this question will remain unanswered.