Where do frogs travel surrounded by the winter? ...
Answers: Interesting question AA!
Frogs migrate from their shallow summer breeding ponds to deeper lakes/water where on earth they spend the winter.
A frog also has a instinctive anti-freeze component in its bloodstream.
Some, at least possible, make holes contained by the ground. If you see a hole surrounded by little balls of dirt in the neighbourhood a body of water, most plausible a frog made it.