San Andreas Fault

The San Andreas Fault is a major geological fault line running through California, marking the boundary between the Pacific and North American tectonic plates. It is a strike-slip fault, meaning the plates slide horizontally past each other. As they move, stress builds up until it's released suddenly, causing earthquakes. The fault stretches about 800 miles and has been responsible for significant quakes in California’s history. It’s a natural part of the Earth's crust movement, highlighting the dynamic and ever-changing nature of our planet’s surface.