Midwinter has been celebrated in icy style at Australia’s Casey, Davis and Mawson stations and on the sub-Antarctic Macquarie Island.

A sub-zero swim, traditional theatre and a sumptuous feast are just some of the ways the wintering expeditioners mark the shortest day of the year.

Midwinter is a significant time on station as it marks the half way point of the expedition and the slow return of the sun after months of darkness and freezing temperatures.