Isthmus of Panama, Land bridge in Panama.
The Isthmus of Panama stretches roughly 400 miles (640 kilometers) from Costa Rica to Colombia, joining the two American continents and dividing the Caribbean from the Pacific. Its narrowest section measures between 30 and 75 miles (48 to 120 kilometers) across, containing mountains, tropical rainforests, and low coastal plains.
Spanish explorer Rodrigo de Galván Bastidas reached these shores in 1501, becoming the first European to encounter this land bridge. Christopher Columbus arrived one year later during his fourth voyage, mapping additional sections of the coast.
The formation of this land bridge enabled the migration of numerous animal species between North and South America, creating diverse ecosystems across the region.
Most visitors experience the isthmus along the Panama Canal or through hiking trails in national parks, where tropical vegetation and waterways are easily accessible. Rain gear is advisable year-round, as the region receives regular rainfall and has high humidity throughout.
The emergence of this land bridge roughly three million years ago changed global ocean currents and helped shape the Gulf Stream. This geological shift influenced climate patterns on both sides of the Atlantic and altered weather systems in Europe and North America.
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