ALT Roses for select ski areas. Roses for 9 ski area from around the world show a range of orientation distributions. Les Trois Vallées of France is the largest ski area in the world. The Dartmouth Skiway of the United States shows a bimodal distribution due to its two peaks. Killington Resort is primarily east facing with a slight northern preference due to the direction of the spine of the Green Mountain. At Mt. Bachelor, one can ski a stratovolcano where beginner terrain is primarily northeast facing, while the advanced terrain is primarily northwest facing. The authors joke that should someone be a fast learner, they could stay in the sun all day at Mt. Bachelor by starting in the beginner eastern terrain in the morning and progressing to the advanced western terrain in the afternoon. Olos Ski Resort of Finland is the darkest ski resort in the world due to its 67.9°N latitude, north-facing orientation, and sloping terrain as calculated by our solar irradiation estimator. ...