The tomb is carved from the solid limestone bedrock. Quaternary surficial deposits are common and cover much of the bedrock throughout the park. Most cave systems are through limestone bedrock. It taps groundwater from the wadi alluvium and some from the bedrock. These consist of hard bedrock underlying the soil. Joints have a profound control on weathering and erosion of bedrock. Precambrian rock is the major component of the bedrock. Glaciers produce these when they contain large boulders that carve long scratches in the bedrock. These materials are superficial deposits that lie above the bedrock. Muskeg forms because permafrost, clay or bedrock prevents water drainage. A solution lake is a lake occupying a basin formed by surface dissolution of bedrock. The ditch was dug by cutting through of solid bedrock and earth. The center of the crater is filled with of rubble lying above crater bedrock. The soil is considered as different from bedrock. Residual materials are mineral materials that have weathered in place from primary bedrock.