Definition: Kraals is a South African word that means "small rocks" or "silt". It's commonly used in the context of sedimentary rock formations. In this case, it refers to small, irregularly shaped stones found in sedimentary rock layers. These can range from tiny pebbles and gravel to massive boulders. Kraals are often associated with areas like beaches or riverside areas where they might accumulate over time due to erosion, weathering, or other geological processes