After crossing the polje and returning to the main road, you will arrive in front of a wall made up of sponge limestones. In this area, grey limestones with fossilized sponges and algae outcrop. As for the coral limestones, these rocks derive from the lithification of an old coral reef, in a shallow water environment (-100 m). These rocks are older (Upper Triassic) than the coral limestones.