Visiting Antarctica, we will not be able to see:

the saltiest lake in the world
720
the most oxygenated lake in the world
1031
a stony desert
431
a volcano
507
In Antarctica we can find the Erebus high volcano at nearly 4 km, the Don Juan pond with a salinity of 44.2%, and the desert of the McMurdo Valleys. Lake Vostok with an oxygen content 5 times more than the average, however, is hidden under a 4 km layer of glacier.
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