A connection between large landmasses or continents that is exposed during lowered
sea levels usually due to
glaciation.
During the last
glacial maximum, which was about 12,000 years ago, a landbridge linked
Siberia in
Asia to
Alaska in
North America. It is theorized that
humans and large mammals such as the
mastadon and the
mammoth migrated into North America across this landbridge and other animals, such as the
horse and
camel, migrated from North America into Asia.
Today, the waters of the
Bering Strait cover this landbridge.