The Kornati (pronounced [kɔ̝rnǎːti]) archipelago, also known as the Stomorski islands, is located west from Šibenik. With 35 kilometres (22 miles) length and 140 islands, some large, some small, in a sea area of about 320 square kilometres (124 sq mi), the Kornati are the densest archipelago in the Mediterranean Sea. There are no permanent settlements in Kornati. Simple houses in well-protected coves are used as temporary shelters. Most of the terrain in the Kornati islands is karst-limestone which, in the distant geological past, arose from sediment from the sea. In the stone on the islands there are numerous fossils of crustaceans and fish. In the area there examples of all the typical forms of karst: bizarre shapes formed by the atmosphere, unexplored caves, areas of flat rock and, above all, cliffs.