Moguls are not always made by a lot of people unintentionally skiing in the same tracks.
They are often made by the
ski resort on a few
trails because some
people like them.
It is generally more
tiring to
ski through moguls, because you have to
turn sharply a lot of times to
avoid going straight into a mogul. That can be bad, often resulting in being out of control and not being able to slow down, or just falling when you land.