At the end of the last ice age, over 20,000 years ago, the lowered sea levels exposed the sea floor of the Bering Strait, which today is only 40 meters deep, and it seems certain that paleolithic Asians crossed this land bridge from Siberia to the North American continent.
在兩萬多年前最後一次冰河期的末端，由於海面下降，水深只有四十米的白令海峽露出海底，舊石器時代的亞洲獵人極有可能從西伯利亞跨越這個陸橋來到美洲大陸。