Climbers all over the world go to Rjukan every year. Cold weather due to high pressure systems contribute to the development of some beautiful frozen waterfalls which are often several meters thick. The best time to go is in February and the worst in March, when the temperatures rise and some of the ice begins to melt, and in December when the wind is too strong. Lipton is the areas' most challenging icefall. There are no guarantees of decent ice climbing conditions.