Layer by layer, Sean Knight gathered the sand and saw it—a man-made building within the dune, much larger than the previous two.
However, it was only after most of the sand was removed that Sean Knight realized that the walls of this concrete "warehouse" were much thicker than the first two.
Moreover, they used a reinforcing steel bar frame, with thumb-thick steel bars forming a densely interwoven mesh. It seemed unlikely that they could break through using the original method.
But—the warehouse had to be breached because it didn't store food or weapons, but bundles and bundles of banknotes from around the world—US Dollars, British Pounds, Italian Lira, German Marks, Israeli Old Shekels, and Rubles, including those from the Soviet era, and so on.
Nearly every renowned currency from the world's major economies last century was present here.