Before they set hoof onto the snow they have to undergo a change of shoes, a feat made possible by farrier Christian Lampert, who replaces regular shoes with a set containing winter grips and a unique layer of silicone to prevent snow sticking to hooves.
The sea ice expanded during Southern Hemisphere autumn and winter in response to the development of a fresh, cool surface water layer, which floated on the denser, warmer salty sea water below.