A Concordia crewmember contemplating the cold. Even in summer temperatures rarely rise above –20°C.
The Concordia base is 3200 m above sea level in the Antarctic. No supplies can be delivered during the winter and nobody can leave the base, no matter what emergency.
The station is the closest thing on Earth to interplanetary exploration. Studying the effects of isolation there is preparing ESA for the real thing: a mission to Mars.