In winter, on the way to Shemshak, look out for the frozen waterfall at Meygoon, where it's possible to go ice-climbing.
Shemshak Ski Resort
Government-operated Shemshak, Iran's second-largest ski field after Dizin, offers challenging terrain with mainly black-rated runs. Vertical descents are about 500m (some of it at an adrenalin-inducing 45-degree angle) and there are plenty of moguls. There are no gondolas, just two chair lifts and four drag lifts to get you up its two main slopes.