PRESENT DAY VIEW OF THE LOWEST SECTION OF THE ANOMALOUS SEVEN — LAYER ROOF. CONSTRUCTION NEEDS FOR ONLY THE LORIENT BASE – 3.4 MILLION CUBIC FEET OF CONCRETE – ALMOST EQUALED THE VOLUME OF CONCRETE POURED IN BUILDING THE HOOVER DAM, CONSIDERED ONE OF HISTORY’S GREATEST CONSTRUCTION ACCOMPLISHMENTS. THIS ‘BOX’ HAS SILTED-OVER BUT IS OTHERWISE UNCHANGED. FOR PERIOD COMPARISON, NOTE THE U-BOATS IN SIMILAR PENS.