Earthquakes happen in Arizona. This 90-second time-lapse video illustrates the distribution of historical earthquakes in Arizona. In the lower right corner is a year counter. The size of the white marker is representative of the magnitude of the earthquake event - big white marker means larger magnitude event.
You can view this video at https://www.youtube.com/watch?v=TjgLe0hCWXw .
Photographer: Jordan Mattis
Photo Date: circa 2012