Adventure travelling is a big business around the world as millions of people try to get an adrenalin rush by doing something extreme. Usually people will try sky diving, bungee jumping, rock climbing, rafting, skiing, hiking etc. at one of the popular destinations. But these destinations can be crowded and uninspiring once they get truly popular. That’s why people are always trying to find new destinations that are not spoilt by excessive tourism yet. And every year new adventure destinations crop up around the world, either because of initiatives by the local government or as part of a tour operated by a visionary travel agency. Here are the top 10 adventures you don’t hear about.