Harrat Khaybar Lava Fields
One of the largest volcanic fields is known as Harrat Khaybar, named after the city which lays on its western side. Its ancient and recent lava flows spread between the provinces of Madinah and Ha’il, on the northwest of the city of Madinah, and cover more than 14 000 square kilometers. It contains a 100-kilometer-long north-south oriented line of volcanic vents including scoria cones, lava domes, maars, basalt lava flows, and the only stratovolcano (built up by many layers (strata) of hardened lava) in the Harrat of western Arabia, the Jebel Qidr.