Prefabricated igloo

Prefabricated igloo:

This prefabricated igloo is a light and aerodynamic portable hut nicknamed “The Apple” that can be transported by helicopters and used in Antarctica as sleeping quarters, laboratory space, or emergency weather shelter. When in place, the structures are propped up with two-by-fours and anchored to the ground with cables so they cannot be flipped by the wind.
© AMNH/D. Finnin