The size of sediment is defined by the size of the particles that make up the sediment. The largest sediment size is called a boulder. Boulders have a diameter that is larger than 256 millimeters (about 10 inches). Cobbles are the next largest sediment, they are 64 - 256 mm in diameter (about 3-10 inches).
However, two days later, 75,000 Allied troops were trapped by the Japanese and forced to surrender. The next day, the Bataan Death March began. Of those who survived to reach the Japanese prison camp near Cabanatuan, few lived to celebrate U.S. General Douglas MacArthurâs liberation of Luzon in 1945.
Mainly starting in Mariveles, on the southern tip of the Bataan Peninsula, on April 9, 1942, the prisoners were force-marched north to San Fernando and then taken by rail in cramped and unsanitary boxcars farther north to Capas.