When conducting seismic exploration in desert areas, we find a strong reverberation between the sand dune surface and the desert floor — a similar situation occurs between the water surface and the sea floor. The reverberation as noise in onshore seismic prospecting is ignored for it does not behave regularly as in offshore cases. This article demonstrates that strong sand dune reverberation does exist, and its period is well correlated to the surface elevation. We also show a method of using variable‐gap deconvolution with surface consistency to suppress dune reverberation.