Watch Mountain Gorilla for Free: How to Stream the Movie Online at 123Movies. . Mountain Gorilla takes us to a remote range of volcanic mountains in Africa, described by those who have been there as ""one of the most beautiful places in the world"", and home to the few hundred remaining mountain gorillas. In spending a day with a gorilla family in the mountain forest, audiences will be captivated by these intelligent and curious animals, as they eat, sleep, play and interact with each other. Although gorillas have been much-maligned in our popular culture, viewers will finally ""meet the legend"" face to face, and learn about their uncertain future.