The actor stayed in Ooty for the three-day shooting.
"An overexcited crew on set has been exemplary in attitude and work ethic - there is this culture among the film fraternity in the south. There are smiling faces, group keepsake photographs, bonhomie and respect and the desire to serve; wonderful and admirable qualities that I shall carry back with me, " Amitabh posted on his blog.
"Thank you 'Kandahar', Mohanlal, Major Ravi (director) and the entire unit. I have enjoyed working with you, " he added.
Amitabh gave his nod to the film only because of his admiration for Mohanlal. He plays a north Indian character in the film.