Bull Pass, near Lake Vanda in the Dry Valleys, Antarctica.

BullPassDryvalleysantarcticamars

Mount Erebus in August about 1 week before the sun rises again at the end of the Antarctic Winter

IceErebus dawn winter antarctica

Moonlight Landscape, Black Island, Antarctica.

IceAntarcticalandscapemoonlightwinter

Nacreous Clouds over the melt channels in the ice shelf in front of Black Island, Antarctica.

IceNacreous cloud polar stratospheric antarctica winter

Ice pressure ridges in front of Scott Base in early summer at 1am in the morning when the sun is no longer setting

Pressureridgesantarcticasunsummermidnightanthonypowellscottbase

Mount Erebus as seen from the pressure ridges in front of Scott Base

Erebuspressresridgesiceantarcticascottbasesouthpoleanthonypowell

Mount Erebus as seen from the pressure ridges near Scott Base Antarctica

Pressureridgesicemounterebusscottbaseantarctica

Pressure Ridges in front of Scott Base. These form over the winter as the sea ice expands and is also being crushed by the advancing Ross Ice Shelf behind them.

pressure ridgesice shelf scott base twilight antarctica anthony powell

Hut point ridge to the north of McMurdo Station after a fresh snow fall a few days after the last sunset.

RCMhutpointridgemcmurdostationantarcticastormysnowanthonypowell

Nacreous or Polar Stratospheric Clouds in the sky above an ice formation in the Scott Base pressure ridges.

PressureRidgeIceScottBasepolarstratosphericcloudnacreousAntarcticaAnthonyPowell

Pressure Ridges in front of Scott Base. These form as the sea ice in front of Scott Base is crushed by the advancing Ross Ice Shelf behind it.

pressureridgesScottBaseAnthonyPowellAntarcticawintericefogmoonlight

Full Moon setting behind the Trans-Antarctic Mountains

moonsetfullmoonsetAntarcticaTransAntarcticMountainsAnthonyPowell

Moon Rise over the Ross Ice Shelf behind the pressure ridges in front of Scott Base.

moonrisepressureridgesiceAntarcticaScottBaseAnthonyPowell

Nacreous or Polar Stratospheric Clouds being illuminated by the moon over McMurdo Sound Antarctica.

MoonPolarStratosphericcloudsnacreousstarsantarcticamcmurdoAnthonyPowell

Full Moon over Observation Hill. The cross is the memorial marker to Robert Scott and his men who died returning from the South Pole in 1914.

ObservationHillfullmoonmemorialcrosscrucifixRobertScottAntarcticaSouthPoleAnthonyPowell

Polar Stratospheric Clouds or Nacreous Clouds

windturbinehdrnacreousPolarStratosphericcloudozonedepletingScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIcefrozen

Polar Stratospheric Clouds or Nacreous Clouds

nacreousPolarStratosphericcloudozonedepletingScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIcefrozenhdr

Radio repeater on top of Mount JJ Thompson

mountJJthompsonrepeaterradioScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIcefrozen

Deep inside a crevasse

imaxcrevasseScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIcefrozen

Mount Erebus, Antarctica's active volcano letting off smoke. The lights of McMurdo Station and Scott Base can be seen in the foreground.

mounterebusactivevolcanotwilightantarcticaMcmurdoStationScottBaseSouthPoleAnthonyPowellAntzice

Standing near the base of the Barne Glacier.

barneglacierantarcticaMcmurdoStationScottBaseSouthPoleAnthonyPowellAntzseaice

A glacier flowing off the southern end of Black Island into the Ross Ice Shelf, Antarctica.

BlackIslandnightglacierantarcticaMcmurdoStationScottBaseSouthPoleAnthonyPowellAntzice

The Andrill research camp on the sea ice in McMurdo Sound, Antarctica.

andrillantarcticaMcmurdoStationScottBaseSouthPoleAnthonyPowellAntzice

Part of the Trans-Antarctic mountains.

transantarcticantarcticaMcmurdoStationScottBaseSouthPoleAnthonyPowellAntzice

"Our Lady of the Snows" shrine is a memorial to a bulldozer operator who lost his life when his machine broke through the sea ice and plunged to the bottom of the ocean.

rcmtwilightScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIcefrozen

"Our Lady of the Snows" shrine is a memorial to a bulldozer operator who lost his life when his machine broke through the sea ice and plunged to the bottom of the ocean.

rcmsunScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIcefrozen

The Onyx River, which only flows for about 2 months each year into Lake Vanda, is Antarctica's longest river in the Dry Valleys.

onyxriverAntarcticaMcMurdoStationScottBaseSouthPoleAnthonyPowellAntzicedryvalleys

Sunset shot of Nacreous or Polar Stratospheric cloud, which forms when ozone depleting gas crystallizes in the upper atmosphere.

sunsetnacreousPolarStratosphericcloudozonedepletingScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIcefrozen

The sun over Inaccessible Island in McMurdo Sound, surrounded by seasonal sea ice.

inaccessibleislandScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIce

Crescent Moon over Mount Discovery

crescentmoonmountdiscoveryScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIce

180 degree view of the beach at Cape Bird. The ring around the sun is caused by ice crystals in the air, commonly referred to as a sun dog.

capebirdbeachwidehdrScottBaseMcMurdoStationSouthPoleAnthonyPowellAntzAntarcticaIce