[2] His later publications have been noted and criticised for their historical revisionism,[3] taking a controversial[4] stance in the Ayodhya dispute, claiming to have found the remains of a columned Hindu temple beneath the subsequently destroyed Babri Masjid mosque.
[10][11] After his studies, Lal developed interest in archaeology and in 1943, became a trainee in excavation under a veteran British archaeologist, Mortimer Wheeler, starting with Taxila,[11] and later at sites such as Harappa.
Between 1950 and 1952, Lal worked on the archaeology of sites accounted for in the Hindu epic Mahabharata, including Hastinapura, the capital city of the Kurus.
[12] In Nubia, the Archaeological Survey of India, Lal and his team discovered Middle and Late Stone Age tools in the terraces of the river Nile near Afyeh.
"[18] Ram Sharan Sharma characterized Lal's later work as driven by communalism and irrationalism, disembedded from "objective and scientific criteria.
"[25] In a seven-page preliminary report submitted to the Archaeological Survey of India (ASI) in 1989, Lal "only mentioned" that his team found "pillar bases," immediately south of the Babri mosque structure in Ayodhya.
[26] In 1990, after his retirement, he wrote in a RSS magazine[note 3] that he had found the remains of a columned temple under the mosque,[21][16][25] and "embarked on a spree of lectures all over the country propagating th[is] evidence from Ayodhya.
[19]Hole concludes that "the structural elements he had previously thought insignificant suddenly became temple foundations only in order to manufacture support for the nationalists' cause.
He claims, that after a decade, leftist historians, suo moto gave a statement that BB Lal hadn't found any evidence of temple.