4hw.org: Recently, a huge mysterious cave appeared in the middle of Antarctica, covering an area larger than Maryland, USA. even scientists can't explain how the mysterious cave was formed. However, it was closed strangely later. It is reported that the Antarctic giant hole was observed in 1974 and disappeared. Let's see the details below!
According to foreign media reports, a huge hole has recently appeared in central Antarctica, covering an area larger than Maryland. Scientists say the hole appeared 42 years ago, but then closed strangely, for reasons that are still unexplained.
According to reports, this giant hole belongs to a kind of Polynia, known as Weddell Sea polynya, which was observed by scientists as early as 1974. At that time, it was the same size as Oregon, but not long after it was observed, the huge ice lake suddenly closed, and was not observed at the same place by NASA until 2016.
The researchers pointed out that most of the interglacial lakes are usually formed near the coast, but the Weddell Sea ice lake is hundreds of kilometers away from the coast, which is very strange.
According to the report, the area of Weddell Sea ice lake after this reappearance is more than five times smaller than that 42 years ago, but it is still expanding. Scientists have no answer about the conditions under which it will be closed and opened respectively.