While we often think of land bridges as animal migration highways, they also help plants disperse. (discovermagazine.com)
This natural land bridge was formed by a river pushing its way under a large, rocky area, leaving many interesting caves and small pools and waterfalls behind. (aroundthisworld.com)
The first Americans originated from Siberia, and migrated into the vast Bering land bridge between Asia and North America, a region also known as Beringia, sometime after 30,000 years ago. (sciencemag.org)