People pounding meal on a natural expanse of flat rock, Angola, ca. 1920-19401920-194041. Pounding Meal on Rocks. A half-dozen people are gathered on an expanse of natural rock to pound meal. A flat plain stretches away in the background.Also included in the International Mission Photography Archive.The back of the postcard has no handwriting. Printed at the edge of the correspondence section is "EDWARD SANDERS, MISSAO INGLEZA, BIE ANGOLA".still image