A natural gas line explosion erupted in San Bruno on Thursday at Skyline Boulevard and Sneath Lane, sending a continuous fireball into the sky that destroyed 37 homes and killed four six residents. The massive explosion, which was heard for miles, was due to a gas line that, according to several San Bruno residents, went unchecked even after contacting PG&E.

Here are a few images of the fire's aftermath.

Read SFist's comprehensive coverage of the San Bruno fire.