The observation of the coast on the level of Vridi Ako lets appear several old barriers of beach. Four (4) wells were dug on one of these barriers of beach in order to know its lithology and the grain size of sediments. Moreover, a mineralogical and morphoscopy analysis of sands was made. The lithology is characterized by an alternation of layers of color yellowish gray and olive gray with the appearance of a surface of white color. These layers consist of sands whose average of sizes varies between 0.470 and 1.269 mm. these are essentially of coarse sands, good enough classified at very well classified. The mode (Mo) indicates that the shape of the graph is bimodal. This shows that there are two sources suppliers of sediments (hinterland and continental shelf). There is also the following mineral: the sphene, the rutile, the anastase, tourmaline, and unspecified minerals. The quartz grains are primarily very round to sub-angulous with as a whole a shining blunted aspect.