Artificial Tracks have specially designed and constructed banked curves plus walled-in straights. Most tracks are artifically refrigerated, but artifical tracks without artifical cooling als exists (for example, St. Moritz). Artificial Track Luge has been an Olympic discipline since 1946.
Here you find a list of all artificial tracks with or without artificial refrigeration.
Natural Tracks are adapted from existing mountain roads and paths. Artifically banked curves are not permitted. The tracks's surface must be horizontal. They are naturally iced, there is no artificial refrigeration.
Here you find a list of all natural tracks in our member countries.