Jabal Haylan volcanJabal Haylan volcano is a 75 km long chain of volcanic vents, cinder cones and lava flows, located about 70 km east of Yemen's capital Sana'a.
The latest eruption from Jabal Haylan must have occurred less than about 3000 years ago.
Introduction:The lava flows of Jabal Haylan contain olivine and the chain of volcanoes crosses a regional NW-SE-trending fault between the highlands and the desert lowlands to the east.
One of the lava flows covers alluvial terraces that accumulated behind man-made dams dating back to about 800-1200 BC, indicating that the volcanic system is still active.
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