The dark-green and bluish-gray areas extending across this NASA Landsat false-color image depict the elongated, E-W-trending Tahalra volcanic field, which covers an area of about 1,800 km² in the Hoggar Province of southern Algeria. About 100 small basaltic cones formed during the Pliocene and Pleistocene, and the most recent activity during the late-Pleistocene and Holocene, produced about 20 maars and cones along the northern margin of the volcanic field.

NASA Landsat 7 image (worldwind.arc.nasa.gov)

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Galleries: Volcanic Fields

Keywords: remote sensing | volcanic field

Tahalra Volcanic Field