latimes:

Scientists are working to create an underground image of the San Andreas Fault, one of the most seismically active and geologically complex regions of the country, in the hopes of changing the way we think about the eventual Big One.

Photo: Geologists Coyn Criley and Joe Svitek tread lightly towards the edge of a blast hole they detonated minutes before. Credit: Don Bartletti / Los Angeles Times

(Source: Los Angeles Times)