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Originally Posted by icarus
I for one did not realize that. Do you have a link?
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Not sure if that is completely correct, but prior to the "little ice age" there is speculation that some of it was opened up
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Around the time of the Viking sagas and for at least two more centuries (a conservative interval from AD 1000 to 1200 that also happens to include the dates allotted to some of the larger Norse ships), prior to the Little Ice Age some limited regions of the Arctic may have been somewhat warmer than they were in the early twentieth century, and were certainly warmer than they were in the depths of the Little Ice Age (see Medieval Warm Period). Also, the sea-level in the Arctic was different from that of the present day.[36] Because of glacial rebound land levels of the land masses about the Northwest Passage have risen upwards of 20 m in the centuries after the Viking times.
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