do boast erections six hundred thousand to wouldn't just north and four hundred thousand cubic meters in southern direction so nature has been doing its job dispersing the sand up and down the coast. every two months the scientists mapped the sand engine and the adjacent coastline. they chant the movements of the masses of sand and record depth changes in the lagoon created behind the sand bar. and. radar and sensors mounted on boys track waves and currents. a fourteen meter tall mast was built for the project as a mount for cameras that monitor the landscape and seascape in all directions.