 The meandering asphalt road between Hofuf and Riyadh is partly laid on gravel and partly on sand Framed Art Print 29 in. x 21 in. Unframed |  White gypsum dunes, some of which are more than fifty feet high, at the monument Framed Art Print 29 in. x 21 in. Unframed |  A portion of the desert plant collection in Huntington Botanic Gardens Framed Art Print 29 in. x 21 in. Unframed |