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feeling for hidden crevass and thin ice.
which only a handful of expert caver have ever dared to enter.
on the stamina of their dogs, which will keep on running
The harpoon sticks firmly in the walrus's thick layer of blubber
The harpoon sticks firmly in the walrus's thick layer of blubber
Today's Arctic city dweller
An angry walrus could easily overturn the boats.
For cameraman Ted Giffords,
the crew relied on anthropologist Niobe Thompson,
First, they round up their strongest animals with lasso,
The herders barter reindeer skins for walrus meat.
permission to shoot with a telephoto lens,
This sled team is part of the Danish Special Forces.
but also to avoid the summer swarm of bloodsucking flies.
were the first to reveal the splendor of Antarctica
They are reindeer people.
Human beings first ventured onto the great plains of Siberia, the tundra,
how this unearthly spectacle affects our atmosphere.
have we endured the hardship that come from living here?
Pasha is looking for the puff of steamy air produced by their quarry,
Reindeer now move not just to find fresh pasture,
a skill that their ancestor brought with them
Friendship and teamwork are essential if they are to succeed.
when the cold relent enough for the toughest icebreakers
that's been ferment in the skin bags for two months.
we're going to be deport back to Alaska,
The building's sloping edge deflect the prevailing wind.
was unveil here in 2006.
The frozen ground never thaw to allow them to do so.
Nobody has ever totally tame reindeer,
have devise ways to deal with the hostile and changing conditions
though small children still have to be sew into their clothes
when temperatures rarely creep above -30 degrees centigrade.
have we endure the hardships that come from living here?
but they will have all their needs cater for.
that it dominate the lives of all who live here.
His team haul their sleds over 100 miles
and has to be melt in a rather alarming way.
The ice around the coast has almost disappear
influence the make-up of the air we breathe.
borrow the techniques of the Arctic peoples.
and 99% of its land is permanently blanket by ice.
Ships are frozen into the rivers for nine months of the year.
that no people ever settle here.
which only a handful of expert cavers have ever dare to enter.
that patrol the whole of northeast Greenland,
We still know remarkably little about the interior of the continent.
It's also the perfect place to launch more outward-looking missions.
Antarctica is so utterly remote and inhospitable
But someday, ways will be found
Skirting seemingly endless crevasses, with no map to guide them
July temperatures on the tundra can be surprisingly high,
and 99% of its land is permanently blanketed by ice.
and inland, the difference is just as extreme.
Here there are ice formations that occur nowhere else on Earth.
And then, literally, they move house.
Beneath, there are stilts that can raise the whole building
Temperatures regularly drop to below -50 degrees centigrade.
Yeah, okay, up on the wall there somewhere now.
will eventually grow to be 300 meters tall.
Nobody else successfully completed the journey
If he fell on that, that would be absolutely horrendous.
This is truly dangerous work.
A fall to the rocks 100 meters below would almost certainly be fatal.
for nearly 50 years after that.
almost exactly as the expedition members left it.
With no roads, sometimes the only passable route
but finally the team is allowed to begin their journey
is constantly sculpting this labyrinth that extends deep under the ice.
Antarctica is so utterly remote and inhospitable
but today's animals are docile enough
in the most unforgiving environment on Earth.
With no roads, sometimes the only passable route
into the frigid interior of the Antarctic continent.
that the cavers are investigating a remote but tantalizing possibility
to study the innermost workings of our planet.
These cliffs can be treacherous,
An unbroken sheet of ice larger than Western Europe,
because steel becomes brittle and vulnerable to the thickening ice.
This is a rare glimpse of the molten rock
in an untouched wilderness and died in the attempt.
The lure of adventure still draws intrepid travelers today.
and has to be melted in a rather alarming way.
Mount Erebus was an irresistible draw
A two-ton seal with formidable tusks.
I thought it was going to be more disgusting than it actually is.
but the crossing could be risky.
The smoke is blown by fierce winds, which are generated by the aurora.
into the frigid interior of the Antarctic continent.
The polar regions are the least populated part of our planet.
they eat an awful lot of the internal organs as well,
The scenery in Antarctica is magnificent and dramatic.