Volunteers of Parisarakkagi Naavu, a group of environment conservation enthusiasts, participated in a campaign to clean the Malaprabha river and its banks from source to the end point at various places in North Karnataka on Sunday.
The clean-up drive and an awareness rally were organised as part of World Water Day celebrations.
Over 500 citizens, including school and college students, professionals, home-makers, senior citizens, and nature lovers participated.