Across from the rip-up clast bed a continuation of this river channel can be imagined. Here a large blocky unit stands out of the rocks. This unit contains clear evidence of flowing water in the form of a common sedimentary feature called cross bedding. Cross bedding is characterised by layers of sediment inclined to the horizontal. Cross bedding forms on sloping surfaces such as ripple marks and dunes. The large size of this deposit suggests that it is a dune which formed within a river channel. Cross beds form when the piled-up sediments of the dune reach a height at which they became unstable and the grains avalanche down the steep side of the dune forming a thin depositional layer. Over time these layers build up next to each other producing the inclined pattern. The dip direction of the bedding acts as an important indicator of past flow direction as the steep faces always tilt down-current. Here the deposits are inclined to the NSE, suggesting that the water was flowing towards where the road now lies. 