Star trails, looking straight up over about 2 hours the movement of the stars create an overhead circular pattern. The green bits in the sky are from some auroras that passed though the shot.
AuroraAustralisnorthernlightssouthernAnthonyPowellAntarcticaBlackIslandMcMurdostationScottsouthpoleBaseMicrowaveradiosatellitestartrail
Two Pisten Bully vehicles traversing across the Ice Shelf from Black Island back to McMurdo in foggy conditions with an aurora overhead turning the lighting green. Temperatures were approx -55 C out on the ice shelf this day, so I only managed one or two photos before the camera froze.
greenpistenbullySouthernNorthernLightsauroraAntarcticaStarsScottBaseMcMurdoStationSouthPolecoldsnowicenightwinterAnthonyPowellAntz