Fire crews continue to investigate the cause and origin of the South Lake Tahoe fire that destroyed two homes on Tuesday night. “We’re looking at the fire investigation — cause and origin. We’re doing a systematic investigation of the whole property looking for burn patterns,” Lake Valley Fire Protection District Fire Chief Gareth Harris said as his crew sifted through the burned debris around 10 a.m. on Wednesday. One person was taken to Barton Memorial Hospital with burns and nearby homes were evacuated after police and fire personnel responded to the fire around 5:55 p.m. The house where the fire …