Before

The magnitude 7.0 earthquake that struck Haiti on Tuesday occurred along the strike-slip fault line that separates the Caribbean and North American tectonic plates, just 10 miles southwest of the capital city, Port-Au-Prince.

The quake, the largest in the region in more than 200 years, has been devastating, and throughout Port-Au-Prince buildings have collapsed, leaving people trapped and streets blocked with the ruins of fallen buildings.