Fire crews were battling a brush fire Thursday that erupted in north Simi Valley.
The Lost Fire was reported just after 6 p.m. near Young Wolf Drive and Swift Fox Court, according to Ventura County Fire.
The blaze was stopped at 66 acres with no damage to property, according to officials.
The cause of the fire is still under investigation.
Firefighters are expected to monitor the area and mop up any areas of heat.