Moguls are a sneaky lot.
When bumps are soft and troughs are clean, they turn mere mortals into undulating gods (thus the term “hero bumps”). But when the light is flat and the mounds are diamondhard lumps of ice, moguls become the harbingers of faceplants and the first step in funding your reconstructive knee surgeon’s vacation to Acapulco. It turns out they have another trick up their snowy sleeves: they like to move uphill.