"The rain overtook them as they began the descent from the north Mexican highlands onto the plain of eastern Chihuahua. Slowly it crept westward, pelting the shoulders, the backs, and sombreros of the travelers. Then it stopped. But its coming had wrought a miracle. Flowers spangled the parched mesas with blossoms of pink, cream, and gold. The sodden soil smelled sweet in the icy air of late afternoon. Even the sinister thornbrush looked friendly in its jacket of small green leaves with a scarlet blossom for a boutonniere. The desert had flared into color and life at the lash of the rain."