What is cracks in the earth crust located between two huge plates?

Cracks in the Earth's crust located between two large tectonic plates are known as faults. These faults are formed due to the movement and interaction of the plates, which can slide past, collide, or pull apart from each other. The stress accumulated along these fractures can lead to earthquakes when the energy is released. A well-known example of this is the San Andreas Fault in California.