This fortress is built of sandstone and clay and it is called Fort Za’bal or Zab’al Palace. It is based on a high mountain in the northwest of Sakaka overlooking the city. It consists of a wall surrounding with four watchtowers and a water reservoir, and it is believed to have been built 200 years ago. The origin of construction dates back to the first century AD.  The fort can only be accessed from one side by a stone staircase. The fort was restored by the Agency of Antiquities. Sakaka Development Committee has built a stone canopy covered with palm fronds at the foot of the fort. The site enjoys the archaeological and heritage importance in addition to its historical importance. ​​​​​