 The Bemaraha limestones stretches over an area of roughly , and are best exposed in the area between the towns of Bekopaka and Antsalova, in the northern half of the Morondava Basin.The outcropping limestones can roughly be divided into a western and an eastern belt with different facies.In the western belt, the formation mainly consists of massive limestones with metre-scale bedding or no recognizable bedding at all.