More than six firefighting crews battled a blaze between Ein Hemed and Ein Nakuba outside Jerusalem on Sunday.
A police helicopter and two firefighting planes were also dispatched to the scene.
Heavy smoke from the fire was visible as far away as Mevaseret, 2 km away from the flame.
In early July, Police arrested two Palestinians suspects from the village of Katanna in connection with the large fire that raced through the wadis near Jerusalem two weeks earlier.
Firefighters and police had immediately suspected that the part of that fire that started near Ma’aleh Hahamisha was the result of arson.