Boeing 777-28E/ER, HL7742 (cn 29171/553), crashed while landing at San Francisco International Airport (SFO) at about 11:27AM on 2013-07-06. 291 passengers and 16 staff members were aboard.
The yellow X on the thumbnail is the approximate location where the wreckage came to rest.
http://www.airliners.net/photo/Asiana-Airlines/Boeing-777-28E-ER/2258365/M/