Harrat Khaybar
Ḥarrat Khaybar is a volcanic field located north of Medina in the Hejaz, Saudi Arabia. It covers approximately 12,000 km2. The most recent eruption occurred between 600 and 700 CE.
Researchers using satellite imagery have discovered evidence of man-made structures which may date from 7,000 years ago or earlier in the lava fields.
