Padre Lucas found rest under an olive tree. He pressed his handkerchief to the halo of white hair around his skull, attempting to suppress the beaded sweat drenching his face. He leaned against the olive trunk, contemplating the green quilt covering the valley floor, tracing the corn patches and grape fields stitched together by a thread of stone hedges. The sinuous River Caima, unusually brilliant under the sun, forced him to squint. He shielded his face. The river, the earth’s open artery, crossed the heart of the valley, delivering life and fertility to the fields. Intricate veins burst from the main artery, channelling precious water to remote places along…