These coastal dunes of sand and gravel along the Helnæs peninsula on the island of Funen in Denmark, gradually crumble away in the sea of the Akrog Bugt. Components of the shore solve by the rippling and sometimes pounding waves at the water-level, causing the soil above to crumble into the water. Funen is Denmark's largest island after Sjælland. Nowadays it is connected by bridges and tunnels with Jutland and Sjælland.