OT: Yellowstone N.P. Winter Vacation

[Tommasini53]

I'm wondering if any Forumites have experienced Yellowstone National Park in the winter. My wife and I enjoy snowshoeing and XC skiing, and we'd like to see the park in the winter. We see a few listings for guided tours, but guided tours aren't our thing. At the same time, we realize that in that environment, that might be much safer.

So, curious if you did the trip on your own or with a guided tour group. Skiing, snow shoeing, what was your adventure?