This is a study about how and if the roundness of the cobblestonebeaches with the older coastline on the east side of Kilsbergen if the difference are significant between altitude and positions. In this work, during the spring of 2004, ten places of Kilsbergens cobblestonebeaches been invented. In each places had a 100 stones been examined with Cailleux roundnessindex. The results of the examine are that the roundness of the stones are not effected by the altitude. But the stones are changing depending if the older coast line is in the northwest or northeast.