1/ My three-volume history places the Indian subcontinent at the centre of world civilisation. On the question of continuity, it is the most impressive case on earth, and the one Western scholarship has most consistently underestimated.
2/ At Bhimbetka's 30,000-year-old paintings, a dancing deity with bangles and trident immediately recalls the dancing Shiva of today, as Michael Wood observed, and as I cite in my own work. A 14,000-year-old yoni stone near Allahabad was recognised on sight by local villagers. This demonstrates continuity. Therefore the seal is a middle chapter in the whole story.
3/ The argument that Indian sacred symbols require a Elamite or steppe source was constructed in the 19th century by Max Muller, who never visited India. He later called his 1,500 BC date for the Rig Veda 'merely hypothetical.' Subsequent historians copied the original date and ignored the retraction. Voltaire said 'everything has come to us from the banks of the Ganges.' He was wrong about most things but right about this.
This isn't Shiva. It's more likely adapted from proto-Elamite iconography, showing an Eurasian deity "lord of animals."
Indian history is amazing, wonderful, and fantastic -- It's well worth getting it right.