Calaveras area firefighters are mounting a huge offense against a large wildfire in San Andreas today.
Investigators now say that fire was caused by a spark from a riding lawnmower.
CDF Tuolumne Calaveras Unit Spokeswoman Beth Ruano says containment of the 150-acre blaze on Mountain Ranch Road is expected tonight.
There are five air tankers, two helicopters, 13 handcrews, 16 fire engines and three bulldozers working the fire now.
This post was last modified on 01/31/2009 4:51 pm