In Japan, the low water level made the Sea of Japan a lake, and a land bridge connected the region to the Asian mainland.The island of Ireland is in turn connected to Great Britain by a giant ice sheet. Another land bridge connected the island of Great Britain with the rest of continental Europe.It is central to the theory explaining how ancient humans crossed between the two continents. The Bering land bridge, now a strait, connecting Asia and North America.Some scholars see a connection with this location and the mythical site of Atlantis, though there are many other theories. A “lost continent” called Sundaland, a southeastern extension of Asia which forms the island regions of Indonesia today.
Here are a few examples of regions of dry land from 20,000 years ago that are now under water: In the map above, these areas are represented as the gray, dry land most noticeable in a few big patches in Southeast Asia and between Russia and Alaska. Water levels in the ocean were more than 400 feet below what they are now, exposing large areas of the continental shelf. At the time of the LGM, the climate was cold and dry with temperatures that were 6 ☌ (11 ☏) lower on average.
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