Mammootty and Adoor Gopalakrishnan have formally set their long-awaited reunion in motion, with the makers announcing the title of their new film as Padayaatra as shooting began on Friday. The project marks the first time in 32 years that the two icons of Malayalam cinema have come together, following their earlier collaborations on Anantaram, Mathilukal and Vidheyan, all of which are considered landmark works in Indian cinema.