4 wheel drive yukon with Chains on the front wheels, Nobody in Mammoth stops what they are doing because of a little snow. They Plow the Main road, and Private Businesses plow the other streets and Parking Lots, and Private Businesses IF YOU SIGN UP FOR THEIR SERVICE, which almost everyone does.
So did you drive through 6 feet of snow, or did you drive on plowed roads that had previously seen 6 feet of snow, but which now have maybe a few inches?
The first is what you claimed. The second is completely different.