 In this way the ancient ocean Tethys has largely disappeared and its remains is today's Mediterranean Sea.The material in the lower parts towards the sea and on the opposite Zagorje side is mainly made up of Eocene Flysch sediments while the higher parts are shaped into carbonate sedimentary rocks.The vegetation in the Biokovo Nature Park is diverse and rich as it is a mixture of the oldest Mediterranean, Boreal and Central newer floral elements.