DabDab
Ah mud, splendid
Most of mine is rut free, theres just a bit at the edge of the hardstanding. They came cantering over this morning, broke to a walk near the rutted bit, carefully tip toed over it and lined up inside for breakfast. Mine are native/cobby ponies though so incredibly sensible and dont seem to really notice the weather.
Well one of mine is a native...
Another of mine is completely ridiculous in the field and it is no exaggeration to say that we are out fixing fencing at least once a month because she's crashed through another section. But she's not silly on frozen ruts, presumable because it actively hurts as she is going over it, which is the main reason I wouldn't turn out on it if mine couldn't get over the rutted section relatively easily.
I honestly can't ever remember seeing a horse hooleying over deeply rutted frozen ground. I really don't think it's a particularly nice environment if they have to spend any length of time walking around on it.