When our daughter was small, there was one year where she reimagined the start of winter as one of those cheesy nature-channel reality shows. Kind of like "Destroyed in Seconds", "World's Wildest Weather", or "When Good Pets Go Bad 2". It sounded like a cache title to us.
You're looking for a bison tube in an evergreen. Fortunately, the tree is not the dense and intimidating kind. The cache is winter-friendly, of course. Please be gentle with the attachment mechanism.
Congratulations to SwordOfJustice for FTF!