Rhydd:
Is another Survival Check needed for Rhydd (or Farwalker) to attempt to recognize the odd round tracks?
Hmm. I was a bit back and forth on this, and in an earlier iteration of the post I straight up gave it away (some of you might have read the post before I managed to update it, and would then know. If so, disregard that information). I'm going to go ahead and say
no, Rhydd knows only what I've posted in the thread currently and is unable to fully identify the prints. I'll justify a 17 being insufficient by restating they've been mostly whisked away/filled back in. Whether or not Rhydd has any guesses is up to you.
Torgrim, post #106 in Chapter 1.5:
"Hello? What's this?" He brushed aside some of the surrounding snow before picking it up for a closer examination.
Give me a History or Arcana check.