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Khaybar, Harrat
"Harrat Khaybar, one of Saudi Arabia's largest volcanic fields, covers an area of more than 14,000 sq km north of Madinah (Medina). A spectacular 100-km-long N-S linear vent system contains felsic lava domes, tuff rings, the Jabal Qidr stratovolcano, as well as numerous small basaltic cones. At least seven post-neolithic (<4500 years old) and eight "historical" (<1500 years old) lava flows are present. In the latter category is the prominent 55-km-long Habir lava flow as well as Jabal Qidr stratovolcano, the only stratovolcano in the Harrats of western Saudi Arabia. An eruption was reported at Harrat Khaybar in early Mohammedan times during the 7th century AD. Lavas from Harrat Khaybar overlap older lavas of Harrat Kura to the west and merge with lavas from Harrat Ithnayn to the north."  -Smithsonian Volcano Archive
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