What’s the most exotic location on earth to shoot a mountain bike film? This question has a lot of answers and can mean many different things to different people. But if you were to put this question to a group, it’s unlikely you would hear anyone utter the name Bhutan. Not because Bhutan isn’t exotic — it certainly is. But it is because the country is relatively unknown to most people. It has only recently, in 1974, opened its borders to tourists.  More and more people visit the country every year. But in Bhutan’s mountain ranges, there are still places where no outsider has ever set foot. The country is…