Echo, the remarkable matriarch of a family of elephants in Kenya's Amboseli National Park, was most studied elephant in the world, the subject of several books and documentaries, including two NATURE films. For nearly four decades, elephant expert Cynthia Moss, and award-winning filmmaker Martyn Colbeck were on hand to record the trials and triumphs of Echo and her family, documenting the intense loyalties and deep caring that are so fundamental to all elephants, creating a moving record of a life we all can share.