Archaeological and geological surveys done since the 1950s, states Irwin, have revealed that the rivers – particularly Ganges – have a different course now than in distant past. The original path of river Ganges had settlements dating from 8th-century BCE onwards. This ancient path of the river placed the pillar more directly on the banks of the confluence. Further, east from the pillar is the remains of an ancient massive well (samudra-kup in early Sanskrit texts), in the direction of the remains of Pratisthan (now Jhusi). The Vasuki temple and Alarkapuri, which pilgrims visit after ritual bathing as a part of their traditional parikrama (circumambulation, Magha Mela walking circuit), are also ancient and consistent with early Sanskrit texts. According to Irwin, the pillar itself is pre-Buddhist, to which Ashoka added the Brahmi script inscription to advertise his edicts to the masses of pilgrims and the extant Buddhist monasteries there. He adds, "we also know with certainty that its original emblem had been – not a lion, as previously supposed – but the bull of pre-Buddhist, Brahmanical religion".
