BY: ELISE CAMPBELL
BIRTA, MOROCCO – Karim Zahrawi, 30, dug through a layer of dark, moist soil that gave in to the rounded edge of his shovel. When he reached a layer of golden brown shale, he grabbed his pickaxe to penetrate the new layer. As his soil-caked hands gripped the handle of the axe, salty beads of sweat from his sun-browned temples fell onto the nape of his navy blue cotton T-shirt. His worn leather shoes gathered new layers of dust as he inched his way deeper into the earth.