Honestly, I think the beginner slopes can be one of the most dangerous places at a lot of resorts. Especially during the peak season. So many people with no control, and no spatial awareness. All it takes is one dude losing control and smack.

Honorable mention to groomed blues/blue-blacks in the sun in the morning and shadow in the afternoon. People just fly down those, hit ice patches, and will go sliding down the hill sideways at like 40 miles an hour.