Chrissie: Well, Antarctica is way down in the middle of the Southern Ocean, so we’ll need a map that’s looking right down on it. Freya: Ah, that’s better, it looks loads bigger than the UK!

Tours to the interior of Antarctica, a growing segment, increased by 19% this last season, which is by 70 people. The number of adventurous tourists visiting Antarctica dipped in the 2014-15 ...