A golfer accidentally sparked a 12-acre (4.85-hectare) blaze after striking a rock while trying to hit his ball out of the rough at a California golf course, the Los Angeles Times reported Tuesday.
The sparks generated by the unnamed player swiping the rock started the fire, which eventually spread across two hillsides near the Shady Canyon Golf Course in Irvine, southern California.
More than 150 firefighters from around Orange County were called in to battle the blaze Saturday.
"We had firefighters on the ground and attacking the fire on the ridge," Orange County Fire Authority Capt. Greg McKeown said.
"We had water dropped from helicopters and water drops from helicopters and hand crews digging a fire line around the edges of the fire."
No charges have been filed against the golfer.