Strait of Gibraltar (IMAGE) Faculty of Sciences of the University of Lisbon Caption The Strait of Gibraltar provides a natural physical barrier between the countries of Spain (north) and Morocco (south). In geologic terms, the 10-mile (16-kilometer) strait that separates the two countries, as well as Europe and Africa, is located where the two major tectonic plates—the Eurasian Plate and the African Plate—collide. Credit NASA, Public domain, via Wikimedia Commons Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.