Bales of hay stacked at least 20 feet high caught fire inside a barn early Tuesday morning.
Chula Vista fire crews arrived to the scene in the 2100-block of Leon Avenue in Nestor around 3 a.m.
Nearby livestock had to be moved from the area however none was injured.
Because of the large amount of hay, it took firefighters more than an hour to put out the fire.
The cause of the fire is not yet known.