This is by far the best free online course I have studied through MOOC, and I have done several in a range of different subjects. The subject of the course is of course fascinating, and essential learning in these times. The course relates mountains and their nature to the current issues surrounding the global ecosystem, climate change etc., giving a very sound elementary education in how this all works, as well as covering every aspect of the alpine environment from how it's formed to what lives there, how and why. But the main reason I rate the course so highly is that the production values are by far the best I have seen for a course of this kind. I don't know what budget they had but they certainly made the most of it. The course has some stunning visuals and includes a high standard of professional location shoots. It also gives interviews with a host of professional scientists and other experts in various fields around the world. By the time the course is done a relative beginner to the subject will not only know a lot more about mountains, but will really want to continue learning and above all, get out and enjoy them.