quartz-formations

Updated: May 20, 2025

The Jibal el-Shafah, or interior ridge, the "lip" of North-Western Arabia; in fact, the boundary-wall of the Nejd plateau. The main object of this travel was to ascertain the depth from west to east of the quartz-formations, which had been worked by the Ancients.

Sir Richard Francis Burton - The Land of Midian — Volume 2