The Island of California
"One of the most famous cartographic errors in history, depicting California severed from North America"
For over a century, European cartographers depicted California as a giant island separated from the North American continent by the imaginary 'Strait of Anian' or an expanded Gulf of California.
Cartographic Origin Story
Derived from Garci Rodríguez de Montalvo's 1510 romance novel *Las Sergas de Esplandián*, which described an island of California inhabited by black Amazons ruled by Queen Calafia. In 1622, Dutch pirates captured a Spanish caravel containing maps showing California as an island, which were reproduced across Europe.
Demonstrates the power of literary fiction to contaminate imperial cartography, surviving for decades despite earlier accurate Spanish surveys.
Scientific Disproof or Geological Fate
Jesuit missionary Eusebio Kino traveled overland from Sonora to the Colorado River delta on foot in 1701–1702, proving California was a peninsula. King Ferdinand VI of Spain issued an official royal decree in 1747 declaring 'California is not an island.'