Gangadhara Tilak Katnam is a 67-years old retired Railway employee. For someone who has spent a large part of his life in service, the regular course would be to enjoy his retirement and relax with family and friends.But did we say Gangadhara is a regular man? No. He is a man on a mission. A mission to fill the dangerous, life-taking potholes on roads. Every day, he goes out in a car and wherever he spots a pothole, he makes sure he fills it up.