An earthquake suddenly breaks out, causing buildings to crumble and disintegrate. Properly mixed dough does not crumble or crack. The soil should crumble easily during digging and be firm enough to resist collapse. Though shattered, the Ottoman army did not crumble at that moment. As the wood dried out, the cell walls would crumble. It does not crumble like hard cheeses. It was after Charlemagne's death that the dynasty began to slowly crumble. Externally, mortar may crumble and salt stains may appear on the walls. When they try to separate them, Quasimodo's bones crumble to dust. The characters would then crumble into dust. A similar Australian chocolate bar is the Violet Crumble. Italians were shocked that such a vast and established empire could crumble so quickly. Good carmine should crumble readily between the fingers when dry. This will allow it to hold together and not crumble during compression. The second time, the bridge will crumble away, leaving either water or lava behind.