Erosion beside Lake Hume at full supply level in the embayment of Sandy Creek (Sandy Inlet Site No. 10), has exposed the surface of a hardpan with a polygonal crack-infill pattern similar to the Tallangatta hardpan. This appears to be formed in piedmont sediments. Apparently, the coarse river gravels of the Tallangatta foreshore and Hillsbrae sites were not deposited at this level in this tributary valley. On the piedmont slope above this site, the Murray Valley Highway cuts through several low rises and exposes typical Tallangatta Hardpan at about a metre below the surface (Site No. 11).