Dune erosion and overwash experiments are performed in the Scheldt Flume at Deltares early 2010. A modified reference profile for the Dutch coast was used containing a horizontal beach of 480 m in prototype. The purpose of the experiments was twofold. First, the influence of the wide beach on the amount of dune erosion was determined. Second, the hydro- and morphodynamics in dune overwash situations was investigated. The latter experiments used the end profile of the former.